IMPROVEMENTS IN TUBE VICES
Year: 1884

page_text: I WILLIAM DEVOLL No 3 Boldmere Road Erdington, near Birmingham in the
County of Warwick Engineer do hereby declare the nature of my invention for
IMPROVEMENTS IN TUBE VICES to be as follows:
In a Iron frame of the shape & configuration shewn at A fig. I and section A. B
of the accompanying Drawings. I place two levers of the form or configuration
shewn at D D the said levers being kept in their position by bolts E E which
pass through the frame and the levers in the manner shewn at Eud Ellevation
fig. 3.
In the lower end of each lever is formed a recess or jaw F F in each of which
is fitted a nut G G having on it two projections or studs H H which fitt into and
are free to move in the slot holes I I of the levers.
A. screw J. having one part of its length a right hand, and on the other part
a left hand thread, is screwed into and passes through the nuts G G which are
screwed out to recieve it.
This screw is held in a central position by two small pins which pass through
the bearing C and also through a groove turned in the middle of the screw in the
manner shewn at Detail C. the pins being so fitted as to allow the screw to revolve
freely in the bearing This bearing C is supported by a bracket K and is secured
to it by a nut L as shewn in FIG. I.
On one end of the Screw J is fitted a hand Wheel M.
In the upper part of each lever D D is formed a large toothed jaw N and
beneath it a smaller jaw N¹ both being of a right angle shape.
The remaining part O, O of cach jaw is parelell and toothed as a vice,
The Action is as follows.―
The jaws of the levers D D FIG. 2. being open, if the screw J be now turned
by the hand wheel M to the right or in the direction of the arrow the nuts G G
will travel from each other on the screw, thereby opening the lower end of the
levers D D and closing the top containing the jaws N N₁ and will then be in the
position shewn at Side Elevation FIG. I. and may again be opened by turning
the wheel to the left.
The length of the levers D D from the centre of the screw J to the fulcrum E
being in the proportion of two to one, as from the fulcrum to the centre of the
jaws N N. the power transmitted by the wheel M and screw J to the levers D D
will be doubled at the centre of the jaws N N. thus forming a very powerfull
grip.
The jaws of the levers are formed so as to be capable of holding either large or
small tubes. while the parelell part or top of jaws. can be used as an ordinary
vice for holding other articles.
Dated this second day of January 1884.

page_text: I WILLIAM DEVOLL No 3 Boldmere Road Erdington, near Birmingham in the
County of Warwick Engineer do hereby declare the nature of my invention
for IMPROVEMENTS IN TUBE VICES and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
In a Iron frame of the shape and configuration shewn at A fig. I and section A B
I place two levers of the form or configuration shewn at D D. the said levers
being kept in their position by bolts E E. which pass through the frame and the
levers in the manner shewn at End Elevation fig. 3.
In the lower end of each lever is formed a recess or jaw F F in each of which is
fitted a nut G G having on it two projections or studs H H which fitt into and
are free to move in the slot holes I. I of levers.
A screw J having one part of its length a right hand and on the other part a
left hand thread. is screwed into is screwed into and passes through the nuts G G
which are screwed out to recieve it.
This screw is held in a central position by two small pins which pass through
the bearing C. and also through a groove turned in the middle of the screw in
the manner shewn at Detail C, the pins being so fitted as to allow the screw to
revolve freely in bearing This bearing C is supported by a bracket K and is
secured to it by a nut L as shewn in FIG. I.
On one end of the screw J is fitted a hand wheel M.
In the upper part of each lever D D is formed a large toothed jaw N and beneath
it a smaller jaw N 1 both being of a right angle shape.
The remaining part O. O of each jaw is parelell and toothed as a Vice.
The action is as follows-
The jaws of the levers D D. FIG. 2. being open. if the screw J be now turned
by the hand wheel M to the right or in the direction of the arrow the nuts G G will
travel from each other on the screw, thereby opening the lower end of the levers D D
and closing the top containing the jaws N N 1 and will then be in the position
shewn at side Elevation FIG. I, and may again be opened by turning the wheel
to the left.
The length of the levers D D. from the centre of the screw J to the fulcrum E
being in the proportion of two to one. as from the fulcrum to the centre of the
jaws N N, the power transmitted by the wheel M and screw J to the levers DD
will be doubled at the centre of the jaws N N, thus forming a very powerfull
grip.
The jaws of the levers are formed so as to be capable of holding either large
or small tubes. while the parelell part or top of jaws can be used as an ordinary
vice for holding other articles.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed. I declare that what I
claim is―
1st That the two levers D, D with their jaws N and N 1 and also parelell faces.
and in this manner applied for holding tubes and other articles is new and novel.
2nd That the manner in which the Power of the wheel and the screw as also
the power of the levers is multiplied at the jaws N N. is for the purpose of
holding tubes, and other articles, new and novel.
3rd That this Invention of frame A & levers D D with their jaws N and N 1

page_text: and faces O. O and with wheel M and screw J (applied in the manner described
in this specification and by the acompanying drawings,) combined, is also new
and novel & forming a powerfull vice, is at the same time of light construction and
very usefull for portable work.
Dated this second day of January 1984
WILLIAM DEVOLL.