IMPROVEMENTS IN VICES
Year: 1885

page_text: I, OLE FLAGSTAD of Strandgaden 56 in Hamar, Norway Manufacturer do hereby
declare the nature of my said invention for " IMPROVEMENTS IN VICES" to be as
follows:-
This invention relates to that description of screw vices which admit of a rapid
opening and closing of the jaws when the screw is released.
The vice has a fast jaw and loose jaw pivoted thereon in the usual way. The
loose jaw has a prolongation against which a spring presses, so that the object held
by the vice remains held somewhat fast, even when the screw is not clamped tight.
The clamping of the jaws is effectuated by a short clamping scrow with a handle
working in a matrix cut through the upper somewhat thicker end of a bent clamp
which grips both jaws of the vice. This bent clamp is provided with a rack
underneath and is held fast behind between a boss pivoted upon the jaw above it
and a toothed wedge. Both the boss and the wedge are capable of rotation upon
cylindrical axes.
To prevent the bent clamp from falling down when the screw is released or
slackened a spring presses against it. This spring serves also to make the clamp
behind fit closely to the projection on the fixed jaw; a two armed lever turning
upon a pivot on the loose jaw serves to open the vice after the screw has been
released. This lever is provided above with a catch for lifting it up and below
with another catch which engages in a little notch in a bar. This bar is fastened
to the outside of the bent clamp by means of a screw, or screws passing through
slots cut in such a manner that the bar moves somewhat to the right and down-
wards, and it presses when thus moved against a peg fixed on a wedge which
engages with the teeth on the bevel clamp, the wedge being thereby pressed out of
contact with the teeth on the under edge of the bent clamp, In order to release
the wedge and immediately to loosen the jaws of the vice, the workman has only
to pull the catch of the two ended lever above referred to, and thus move the bar
fastened to the outside of the bent clamp with which it engages. The vice is
closed by the action of a spring pressing against the end of the loose jaw projecting
beyond the pin on which it is pivoted. If the pressure of the spring is insufficient,
or there is no spring a push from the front against the screw or the loose jaw will
easily effect the closing, whereby the wedge slips over the teeth of the bent clamp.

page_text: The bar, fastened to the outside of the bent clamp, already mentioned may be
pivoted or fixed loosely on a single screw, at or near its centre and the same result
be attained, by depressing the end of the bar over the wedge, the wedge being
thereby released from the bent clamp.
The point of support of the two ended lever can also be attached to the bent
clamp, (that is, to an upward prolongation thereof) which has advantages from
several points of view. In this case the movement of the retaining wedge may be
made, automatic by means of the arrangement that the loose jaw towards which
upon the turning back of the screw the left end of the bent clamp approaches, by
means of a spring near the furthest position of the same abuts upon the upper end
of the lever and thereby pushes back the piece.
}
In order to secure a better hold of the teeth of the retaining wedge in those of
the clamp, even when the vice is wide open, and the bent clamp has consequently
assumed a somewhat oblique position, the upper end of the retaining wedge is
constructed as a piece capable of rotation around an axle which has a sufficient
hold partly by the pipe which passes between the two parts of the bent clamp,
partly by the two pins-fixed upon the bar. The bar may be constructed otherwise,
for instance it may be articulated upon the bent clamp and the lever, said lever
can also have one or more arms.
W P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, and
323, High Holborn, London,
Patent Agents for the Applicant.

page_text: "i ***
I, OLE FLAGSTAD, Strandgaden, 56, Hamar, Norv, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:- ;
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This invention relates to that description of screw vices which admit of a rapid
opening and closing of the jaws when the screw is released.
The invention is illustrated in the annexed drawing, wherein Figure 1 represents
a side view of the screw vice, and Figure 2 a and b show a modification of the
details of the arrangement.
d is the fixed and e the movable jaw of the vice, e is pivoted on e in the usual
way, and has a prolongation at e¹ against which the spring.h presses, so that the
object held by the vice remains held somewhat fast even when the screw is not
clamped tight. The clamping of the jaws is effected by the short clamping screw f
with handle working in a matrix cut through the upper, somewhat thicker end
of the bent clamp b which grips both jaws of the vice e and d.
This bent clamp bis provided with a rack underneath and is held fast behind
between the smooth piece c and the toothed wedge a with spring d. Both o and a
are capable of rotation upon cylindrical axes d' and a fixed either in the parts
named or on the corresponding portion of the vice d....
To prevent the clamp b from falling down when the screw f is let go, the
spring presses against the projection 63, which spring may also be fastened onto
the said . This spring serves also to make the clamp behind adhere closely to
the piece c.
The two-armed lever turning upon g' serves to open the vice after the screw
has been released. This lever is provided above with the catch g* for lifting it up,
and below with the catch g³ which engages in a little notch in the bar b¹. This.
bar is fastened to the outside of the bent clamp 6 by means of the screw b³ in such
a manner that it can move somewhat to the right and downwards, and it presses
when thus moved against the peg a fixed on the wedge a whereby the wedge is
pressed out of contact with the toothing of the bent clamp b. In order to release
the wedge and immediately to loosen the jaws of the vice, the workman has only
to pull the catch g of the two ended lever above referred to, and thus move the
bar fastened to the outside of the bent clamp with which it engages. The vice is
closed by the action of the spring ħ pressing against the end of the loose jaw
projecting beyond the pin on which it is pivoted. If the pressure of the spring is
insufficient, or there is no spring, a push from the front against the screw for the
loose jaw e will easily effect the closing, whereby the wedge slips over the teeth on
the bent clamp.
The bar b' already mentioned may be pivoted or fixed loosely on a pin placed at
the point indicated by the letter b' in the drawing, and the same result be obtained
by impressing the end of the bar over the wedge, the wedge being thereby released
from the bent clamp.

page_text: The point of support of the lever g can also be attached to the bent clamp b
(that is, to an upward prolongation thereof) which has advantages from several
points of view. In this case the movement of the retaining wedge may be made
automatic by means of the arrangement that the loose jaw e towards which upon
the turning back of the screw the left end of the clamp 6 approaches by means of
spring near the furthest position of the same abuts upon the upper end of the
lever and thereby pushes back the piece.
In order to secure a better hold of the teeth of the retaining wedge in those of
the clamp, even when the vice is wide open, and the clamp has consequently
assumed a somewhat oblique position the arrangement shewn in side elevation at
Figure 2a (bar 61 having been removed) and in back view at Figure 2b. The
upper end of the retaining wedge is here shown as a piece a³ capable of rotation
around an axle at which has a sufficient hold partly by the part which passes
between the two parts of the bent clamp partly by the two pins fixed upon the
bar 6. The bar may be constructed otherwise, for instance it may be articulated
upon the clamp and the lever g. Lever g can also have one or more arms.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1. In screw vices, devised for rapid opening and closing and provided with a
clamp band short pressure screw f, the application of the retaining wedge a with
toothing either fixed as shown in Figure 1, or movable as shown in Figure 2,
together with the spring e³ for holding the clamp, substantially as described, and
shewn in the annexed drawing.
"
2. In screw vices of the above described construction, the application for the
purpose of opening the vice, of the bar 61 either capable of rotation around an
axis, or movable to and fro in combination with a lever g, having one or more
arms fixed so as to be capable of rotation either upon the vice itself, or upon the
clamp aforesaid for the adjustment èither by hand or automatically of the retaining
wedge a.