Year: 1886

page_text: I CARL JOSEF HERMANN of Bielefeld, Westphalia in the Empire of Germany,
Engineer, 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 and accompanying drawings
This Invention relates particularly to bench vices for holding objects securely while
being operated upon as is well understood. The jaws of a vice constructed in
accordance with my invention can be drawn further apart than is the case with
ordinary screw vices and the object sustained in the vice is securely held at all
positions of the jaws. Another advantage of my invention is that the jaws of the vice
can be quickly opened and set to the required extent.
And in oriler that my said invention may be properly understood I will now
proceed more particularly to describe the same, reference being had to the annexed
sheet of drawings and to the letters and figures marked thereon-that is to say :-
Fig. 1 is a side elevation of. the vice; Fig. 2 is a plan; Fig. 3 an end elevation and
Fig. 4a horizontal section at the line a, b, Fig. 1. In the said Figs. the front jaw A
is carried in a U shaped frame S which is capable of sliding backward and forward in
the frame which lies beneath and is secured to the fixed jaw B of the vice. The
sliding U shaped frame S is supported in front on an antifriction bowl R and at the
back has a prolongation which slides in a passage formed to receive it in the part p
of the fixed jaw B. The speedy adjustment of the sliding frame S and jaw A is
obtained by means of a pawli (see Fig. 1) carried by a sliding prolongation ¿¹ which
slides in snugs formed on the frame C. The prolongation carries a ruff, and a
helical spring m the spring m tending constantly to depress the pawli so as to make
it engage with the rack Z formed in the lower part of the frame C. To guide it in
its upward and downward movements the pawl is confined between two walls ww.
A lever is pivotted at O' in the sliding frame S. The inner end of this lever enters
a recess formed in the pawli and the outer end is connected by a link e to a trigger d
g

page_text: 4
pivotted on the collar which forms a fixed part of the frame S. When the free end
of the trigger d is raised which can be done with one hand while the other is used to
slacken the screw the outer end of the lever is depressed so as to lift the pawl out
of contact with the toothed rack Z and thus allow the frame S and jaw A to be pulled
out or pushed in as desired. When shifted to the required extent the pawl is allowed
to drop again into gear with the rack and the object placed between the jaws is
gripped by a turn of the screw 7 which is operated in the ordinary manner by a
wrench passing through the head c in the usual manner. The jaw A is connected to
the frame S by a prolongation f which extends downward from the collar a¹ the end
of the prolongation being confined between plates n and prevented from rising by a
cross plate secured by a screw as shown. By removing the plate 7 the jaw A can be
lifted out of the frame S and replaced by another if desired. It will be observed that
in all positions the gripping faces of the jaws are at the same relative angle to each
other. The front plate t of the frame S carries or is formed in one piece with the
collar the side walls of the frame being secured to the plate t by screws u.
The
inner end of the screw bears upon the prolongation of the jaw A and forces it at the
required times toward the fixed jaw B. Fig. 5 is partly a side elevation and partly a
section of a modification of my improved vice similar in construction to that already
described but having the further advantage that it can be turned on a central pivot to
any desired angle with relation to the bench upon which it is fixed. Fig. 6 is a
horizontal section at the line 2, y. Fig. 5. In Figs. 5 and 6 the frame S is of an
Lshape the base S₁ sliding in ways or in a recess formed in the sole or turn-table P.
The base S contains the horizontal lever which actuates the sliding pawl which
engages with a toothed rack Z formed in the part P and shown clearly at the plan
view Fig. 6. Instead of a helical spring as in Figs. 1 to 4 I employ a flat spring mas
clearly shown in Fig. 5. The turn table P is supported on a central pivot with a
screwed prolongation or shank O¹ upon the end of which is screwed a wing nut M.
The pivot O enters a recess in the sole plate G the said recess being large enough to
leave an annular recess round the pivot O the said annular recess being occupied by a
coiled spring F. The turn table P is formed on its lower side with radial teeth w
which at times engage with corresponding teeth formed in the fixed sole G the said
teeth being conventionally indicated by the radial lines indicated in Fig. 6 of the
drawings. The spring F tends constantly to uphold the turn-table P and parts carried
thereby so as to keep the teeth in the turn-table P clear of the teeth on the fixed sole G
at which times the turn table and vice can be turned to any desired angle. To fix
the vice firmly in the required position the wing nut M is then turned so as to draw
down the turn table P until it rests upon the sole G the teeth of the respective parts
engaging so as to fix the vice at the desired angle, the wing nut M binding the whole
firmly to the bench as shown. The remaining parts in Figs. 5 and 6 are similar
to the corresponding parts in Figs. 1 to 4 and are indicated by corresponding letters.
It will be evident that the construction of the frame S and arrangement of the flat
spring m for depressing the pawl as shown in Fig. 5 might be applied in the construction
of vices not having the pivot or turn-table arrangement shown at Figs. 5 and 6.
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.) The general arrangement construction and combination of parts composing
the improved vice substantially as described and shown in Figs. 1 to 4 of the
drawings.
(2.) In vices of the indicated construction the U shaped or L shaped frame carrying
a removable jaw and capable of being drawn out, pushed in and adjusted and held by
means of the sliding pawl engaging with a fixed rack and governed by a coiled or flat
spring and operated by links and levers from a trigger in front of the vice all
substantially as hereinbefore described and illustrated.
(3.) The general arrangement and combination of parts composing the improved
vice illustrated by Figs. 5 and 6 and substantially as hereinbefore described.

page_text: (4.) In vices of the indicated construction supporting the vice upon a turn table
carried by a central pivot and formed with teeth or catches which at times engage
with corresponding feeth or catches formed on a fixed sole plate beneath the turn
table the said turn table being at times upheld clear of the teeth on the sole plate by a
spring and at times bound into close contact with the fixed sole by means of a nut,
screwed on a prolongation of the pivot all substantially as hereinbefore described and
shown with reference to Figs. 5 and 6.
DUTTON & FULTON,
1, St. James Square, Manchester,
Agents.