IMPROVEMENTS IN VICES.
Year: 1874

page_text: LETTERS PATENT to Matthew Picken and William Picken, both of
-
Birmingham, in the County of Warwick, Machinists, for tho
Invention of." IMPROVEMENTS IN VICES.".
PROVISIONAL SPECIFICATION left by the said Matthew Picken and
William Picken at the Office of the Commissioners of Patents,
with their Petition, on the 13th May 1874.
WC, MATTHEW PICKEN and WILLIAM PICKEN, both of Birmingham,
in the County of Warwick, Machinists, do hereby declare the nature
the said Invention for "IMPROVEMENTS IN VICES," to be as follows:
MI
.
Our Invention consists of the improvements herein-after described in
supporting and working the moveable jaws of parallel vices, whereby
the slides ordinarily used with the said moveable jaws are dispensed
with.
According to our Invention we support and work the moveable jaw
of the parallel vice in the following manner:-Revolving in and carried

page_text: by the fixed jaw of the vice are two right-handed parallel screws, the
said screws working in tubular guides in the said fixed jaw. In the said
tubular guides screw nuts are fixed, the said nuts constituting screw
boxes in which the parallel screws engage. The plain ends of the
parallel screws pass through and revolve in the moveable jaw, the said
ends projecting from the front of the moveable jaw, and having upon
them toothed wheels, the said toothed wheels being geared together by
a toothed wheel between them working on the moveable jaw.
The gearing described is protected by a metal strap or covering plate.
The handle of the vice is fixed on one of the said screws. By turning
the said handle the screw is rotated, and rotation in the same direction
is transmitted through the toothed gearing described to the other and
parallel screw. The two screws are thereby simultaneously rotated in
the same direction, and made to advance in or retire from the screw
boxes in the fixed jaw. The moveable jaw is thereby made to approach
to or recede from the fixed jaw, the said moveable jaw working paralled
with the fixed jaw.
Instead of using two right-handed screws geared together by an inter-
mediate wheel, as described, a right-handed screw and a left-handed
screw without an intermediate wheel may be employed. In this last
case the toothed wheels on the ends of the screws gear directly with
cach other.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said John Matthew Picken and William Picken in
the Great Seal Patent Office on the 7th November 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, MATTHEW.
PICKEN and WILLIAM PICKEN, both of Birmingham, in the County of
Warwick, Machinists, send greeting.
2
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of May, in the year of 3
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Matthew Picken and William Picken,
Her special license, that we, the said Matthew Picken and William

page_text: Picken, our executors, administrators, and assigns, or such others as
we, the said Matthew Picken and William Picken, our 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 and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS
IN VICES," upon the condition (amongst others) that we, the said
Matthew Picken and William Picken, our executors or administrators,
by an instrument in writing under our or their hands and seals, or
under the hand and seal of one of us or them, should particularly describe
and ascertain the nature of the said Invention, and in what manner tho
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.
NOW KNOW YE, that we, the said Matthew Picken and William
Picken, do hereby declare the nature of the said Invention, and in
what manner the same is to be performed, to be particularly described.
and ascertained in and by the following statement thereof, that is to
say :-
Our Invention consists of the improvements herein-after. described in
supporting and working the moveable jaws of parallel vices, whereby
the slides ordinarily used with the said moveable jaws are dispensed
with.
According to our Invention we support and work the moveable jaw
of the parallel vice in the following manner :-Revolving in and carried
by the fixed jaw of the vice are two right-handed parallel screws, the
said screws working in tubular guides in the said fixed jaw. Screw
boxes are made in the fixed jaw in which the parallel screws engage.
The plain ends of the parallel screws pass through and revolve in the
moveable jaw, the said plain ends projecting from the front of the
moveable jaw, and having upon them toothed wheels, the said toothed
wheels being geared together by a toothed wheel between them working.
on the moveable jaw.
The gearing described is protected by a metal strap or covering plate.
The handle of the vice is fixed on one of the said screws. By turning
the said handle the screw is rotated, and rotation in the same direction

page_text: is transmitted through the toothed gearing described to the other and
.
parallel screw. The two screws are thereby simultaneously rotated in
the same direction, and made to advance in or retire from the screw.
boxes in the fixed jaw. The moveable jaw is thereby made to approach
to or recede from the fixed jaw, the said moveable jaw working parallel
with the fixed jaw.
Instead of using two right-handed screws geared together by an inter-
mediate wheel, as described, a right-handed screw and a left-handed
screw without an intermediate wheel may be employed. In this last
'case the toothed wheels on the ends of the screws gear directly with
cach other.
We will now describe, with reference to the accompanying Drawing,
the manner in which our Invention may be performed.
Figure 1 represents in side elevation, Figure 2 in plan, and Figure 3
in longitudinal vertical section a parallel vice constructed according to
our Invention; Figure 4 is an end elevation of the same; and Figure 5
is a cross section of the same,
The section Figure 3 is taken on the line a, b, of Figure 2, and tho
section Figure 5 is taken on the line c, d, of Figure 1.
The same letters of reference indicate the same parts in the several a
Figures of the Drawing.
e is the fixed jaw of the parallel vice secured by the screws and nuts
at e² to the bench 9; f is the moveable jaw; h, i, are the two right-
handed parallel screws by which the moveable jaw fis supported and
worked. In the said fixed jaw e are two cylindrical guides k, k, in 2
which the plain parts of the screws h, i, work, and in the rear parts of
the said fixed jaw are screw boxes ², 2, in which the screws h, i,
engage, as represented. The plain front ends ³, 3, of the screws h, i,
pass through and rotate in the moveable jaw f. On the plain ends h³, 23,
of the screws h, i, which project from the face of the moveable jaw f, a
toothed wheels or pinions and m, are fixed as represented, and between
the said wheels or pinions l, m, is a third toothed wheel or pinion n
gearing with them. The said middle toothed wheel or pinion n turns
looscly on the axis p fixed in the manner represented in Figure 3 to the
moveable jaw f. Around the gearing l, m, n, is a metal strap or covering 3
plate q, by means of which they are protected; "is the handle of tho

page_text: herein-before described, and illustrated in the accompanying Drawing,
whereby the sildes ordinarily used with the moveable jaw are dispensed
with.
Also the modification described, in which a right-handed screw and a
left-handed screw directly geared together are employed in place of two
similarly threaded screws geared together by an intermediate toothed
wheel.
'
In witness, whereof, we, the said Matthew Picken and William
Picken, have hereunto set our hands, and seals, this Fourth day
of November, in the year of our Lord One thousand eight
hundred and seventy-four.
Witness,
RICHARD SKERRETT,.
Clerk to George Shaw,
Birmingham.
MATTHEW PICKEN. (L.S.)
WILLIAM PICKEN. (L.S.)