handle is moved to unlocked position
the force exerted by the spring is re-
laxed and the gripping cam may be
retracted by pushing the lifting shackle
into body of clamp. Refer to the Opera-
tion Section of specific models of
“Lock Closed” clamps for additional
details. Typical “Lock Closed” clamps
are Models DG, FR and M.
“LOCK OPEN ONLY” - normally used
on “Hot Lift” clamps and consists of a
manually operated “Lock Stop Pin” that
is inserted when gripping cam of clamp
is retracted and removed when clamp is
positioned on the plate. Tag line may
be used to permit operator to remove
pin from a greater distance from clamp.
Refer to the Operation Section of spe-
cific model of “Lock Open Only”
clamps for additional details. Typical
“Lock Open Only” clamp is the Model
RO.
“LOCK OPEN-LOCK CLOSED” - an
over-center spring loaded mechanism in
which the spring exerts a force on the
gripping cam when the lock handle is
moved to the “Lock Closed” position.
When the handle is moved to the “Lock
Open” the gripping cam is maintained
in the retracted position for ease in in-
stalling the clamp on a plate or mem-
ber. The Model FRD contains individ-
ual “Lock Open” and “Lock Closed”
mechanisms that must be operated
separately. Refer to the Operation Sec-
tion of specific models of the “Lock
Open-Lock Closed” clamps for addi-
tional details. Typical “Lock Open-
Lock Closed” clamps are Models FRD,
R, S, SD, SEA, SX, TL, TLA and the J-
Series.
“LOCKING WEDGE” - is a fluted
steel wedge that is driven in place with
a
hammer. The body of the wedge is
positioned in a slot in the clamp body
with the fluted edges contacting the
member to which the clamp is being
attached. Refer to Operation Section
of specific models of the “Locking
Wedge” clamps for additional details.
Typical “Locking Wedge” clamps are
Model A1, B1, B2 and PB.
”LOCKING SCREW” - “Lock Screw”
clamps depend on manually adjusting a
screw to hold the gripping surface in
place for lifting and removing the
clamp from member being lifted. Refer
to Operation Section of a specific
model of “Locking Screw” clamps for
additional details. Typical “Locking
Screw” clamps are Models AC, ACP,
NM, PC, SCP and SCPA.
NON-LOCKING: “Non-Locking”
clamps have no mechanisms to aid in
attaching or removing clamp from
member being lifted. It is necessary to
have position of clamp maintained on
the member being lifted until a properly
applied force is exerted to the lifting
shackle. Refer to Operation Section of
specific models of the “Non-Locking”
clamps for additional details. Typical
“Non-Locking” clamps are Model AST,
ASTL, BD, HR, HDR and WHSR.
WARNING:
A pointing out and no-
tice of danger. The purpose of a
“WARNING” is to apprise the operator
and all other affected persons of the
existence of danger of which he should
be but may not be aware and to enable
the operator to protect himself and oth-
ers where applicable against such dan-
ger. An attempt is made herein to warn
against reasonable and reasonably fore-
seeable danger in the proper use and
possib le reason ab le misu se of
RENFROE products described in this
manual.
Содержание DWS
Страница 4: ......
