IMPROVEMENTS IN VICES FOR MACHINISTS AND OTHERS.
Year: 1872

page_text: LETTERS PATENT to Anson Parsons Stephens, of Brooklyn, in the
State of New York, United States of America, for the Invention
of "IMPROVEMENTS IN VICES FOR MACHINISTS AND OTHERS.'
"
Sealed the 22nd October 1872, and dated the 3rd May 1872.
PROVISIONAL SPECIFICATION left by the said Anson Parsons Stephens
at the Office of the Commissioners of Patents, with his Petition, on
the 3rd May 1872.
I, ANSON PARSONS STEPHENS, of Brooklyn, in the State of New,
York, United States of America, do hereby declare the nature of the ;
said Invention for "IMPROVEMENTS IN VICES FOR MACHINISTS AND OTHERS," to
be as follows:-
1
This Invention is for adapting the jaws of vices to the reception of
tapering or irregularly shaped articles, and consists in a secondary jaw
that is made with the outer-face-as-an-arc-of a circle entering a corres-*
pondingly shaped recess in the jaw of the vice, so that by sliding this
jaw endwise in the said recess the clamping face of the jaw will occupy
an angular position to the other jaw of the vice instead of being parallel
J

page_text: as usual, thus adapting the jaw to irregular, tapering, and angular
articles. There are to be grooves and ribs in the curved faces that come
in contact, so as to hold or support the moving secondary jaw, and the
extent of motion can be determined by a set screw entering a slot.
This secondary jaw may be applied to the moving or the secondary ¿
jaw of a vice, or it may be in an independent jaw that is adapted to
being attached to one of the jaws of an ordinary vice so as to suit
irregular or angular articles.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Anson Parsons Stephens in the Great Seal Patent 1
Office on the 23rd October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANSON
PARSONS STEPHENS, of Brooklyn, in the State of New York, United
States of America, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 1
Letters Patent, bearing date the Third day of May, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Anson Parsons Stephens, Her special licence
that I, the said Anson Parsons Stephens, my executors, administrators, 2
and assigns, or such others as I, the said Anson Parsons Stephens, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain 2
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN VICES FOR MACHINISTS AND OTHERS," upon the condition
(amongst others) that I, the said Anson Parsons Stephens, my exe-
cutors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and 3
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Anson Parsons Stephens, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being made to the Drawing here-
unto annexed, and to the letters and figures marked thereon (that is
to say) :-
This Invention is for adapting the jaws of vices to the reception of.
tapering or irregularly shaped articles, and consists in a secondary jaw
that is made with the outer face as an arc of a circle entering a cor-
respondingly shaped recess in the jaw of the vice, so that by sliding this
jaw endwise in the said recess the clamping face of the jaw will occupy
an angular position to the other jaw of the vice instead of being parallel
as usual, thus adapting the jaw to irregular, tapering, and angular
articles. There are to be grooves and ribs in the curved faces that come
in contact so as to hold or support the moving secondary jaw, and the
extent of motion can be determined by a set screw entering a slot.
This secondary jaw may be applied to the moving or the stationary
jaw of a vice, or it may be in an independent jaw that is adapted to
being attached to one of the jaws of an ordinary vice so as to suit.
irregular or angular articles.
In the Drawing, Fig. 1 is a plan of the said improvement as applied
to a vice similar to that shown in Letters Patent No. 851, granted in.
Great Britain, March 12th, 1868; Fig. 2 is a side view of the same, with
the jaw partially in section; Fig. 3 is an elevation of the separate
movable jaw; and Fig. 4 is a section of the jaw in a modified form.
b
The movable jaw a and stationary jaw 6 are of any usual character.
The improved attachment may be formed upon either jaw or attached to
the same.
In the Drawing the jaw holder c is attached to the bar d of the jaw a
by the set screw e, and the back of the holder c rests against the jaw a,
and its face is concave to receive the secondary jaw ƒ that is made
convex.
There-are-ribs and grooves of any desired character in the surfaces of
f, c, that come into contact, so that the end movement of the secondary
jaw is not obstructed, but the parts are connected together.

page_text: To prevent the parts sliding apart a set screw g should be employed,
the end passing into a groove, the length of which limits the extent of
motion. When the secondary jaw is moved endwise its face assumes an
angular position to the face of the jaw b to accomodato irregular or
*tapering articles.
There may be an additional adjustment by placing the secondary
jaw fand upper part of the jaw holder in a concave cylindrical bearing,
shown sectionally in Fig. 4, that allows the jaw f to be rolled in the
bearing 2 so that its face will be at an inclination from the vertical line,
and thereby articles that taper vertically, or horizontally, or both can be
firmly grasped by the vice.
I claim as my Invention, the secondary jaw ƒ made with one side an
arc of a circle in combination with a similarly shaped jaw or jaw holder,
substantially as and for the purposes set forth.
In witness whereof, I, the said Anson Parsons Stephens, havo herc-
unto set my hand and seal, this Second day of October, A.D.
firmly grasped by the vice.
I claim as my Invention, the secondary jaw ƒ made with one side an
arc of a circle in combination with a similarly shaped jaw or jaw holder,
substantially as and for the purposes set forth.
In witness whereof, I, the said Anson Parsons Stephens, have herc-
unto set my hand and seal, this Second day of October, A.D.
1872.
Witnesses,
BENJ. F. STEPHENS.
MELVIN STEPHENS.
ANSON PARSONS STEPHENS. (L.S.)