Improvements in Chucks for Lathes and like Machines.
Year: 1899

page_text: Date of Application, 18th Sept., 1899-Accepted, 16th Dec., 1899
[Communicated from abroad by OWEN FRANCIS GARVEY, of 1, Hay Street, Provi-
dence Rhode Island, United States of America, Inventor].
Improvements in Chucks for Lathes and like Machines.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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:-
This invention consists in constructing a chuck for holding work in lathes and
other machines, in such a manner that the article can readily be changed in
position to be operated upon on different sides and in different directions, without
having to be removed from the chuck, and reset.
Referring to the accompanying drawings:-
Figure 1 is a front view of a two jawed universal chuck with the improvement
attached.
Figure 2, shows a side view of the chuck with a piece of work in it, with some
of the parts represented in section.
Figure 3, represents a face view of one of the blocks attached to the jaws of the
chuck.
Figure 4, is a face view of the rotating blocks that hold the work in the chuck.
Figure 5, shows a side elevation of one of the rotating blocks.
Figure 6, shows a similar view of the other rotating block.
Figure 7, is a face view of the spring washers used in the blocks.
Figure 8, is an edge view of the spring washers.
Figures 9 and 10, represent different sides of the work held in the chuck, the
example illustrated in the drawings being a gas cock and
Figures 11, 12 and 13, show how a lateral change of position is made.
The object of this invention is to facilitate the work done in chucks_on_articles
that have to be operated on by drilling, turning &c., on different sides, by making
it possible to readily change the position of the piece in the chuck for the different
operations without having to release the article and readjust it.
The construction and operation of the improvement are as follows:-
In Figures 1 and 2 of the drawings, A represents a two jawed chuck which in
its main parts may be made in most of the usual ways. C C₁ are the two jaws,
and B, is the screw that moves the jaws towards or from the centre of the chuck,
which screw is usually made with a right hand thread for one jaw and a left hand
thread for the other jaw. A block a, is attached to the inner face of one of the
jaws C, preferably by dovetailing as seen in Figure 1. This block «, has a hole
or socket d, made through it, see Figure 3, which is a face view, and the inner half
of the socket, is bored out larger as shown in Figure 2.
A cylindrical block h, is turned down for the greater part of its length to fit
closely in the smaller part of the socket d, in the block a, and the inner half of the
block h, is turned down still smaller to receive a spring washer b, and a nut e, that
is screwed into the inner end of the socket d.
The nut e, is recessed in on one side to receive the head of a screw e¹, that is

page_text: screwed into the end of the block a, and the head of the screw e¹, is made larger
than the hole in the nut e, to keep the block h, from coming out of the block a.
A washer f, is fitted loosely on the smaller part of the block h, to rest on a shoulder
f, and convey the pressure of the spring washer b, and push the block h, outwards.
A steel collar m, is made fast in the face of the block a, and a set of radial V-shaped
ridges c, c, shown in Figure 3, are made on the outer face of the collar to receive
corresponding shaped grooves c¹ el, made on the shoulder of the block h.
A similar block a', is dovetailed on the face of the other jaw C¹, and a like
socket d', is made through it to receive a cylindrical block h¹, which is made to
fit closely as described of block h, but in this case a nut k, is fitted to screw on
the inner end of the block, and the smaller part of the block between the nut k
and the shoulder is made partly square Figure 6 to receive a steel washers, and
partly round to receive a spring washer b'. A steel collar m², is made fas against
the shoulder in the block at, and radial V shaped ridges o o are made on its inner
side, and corresponding grooves o' o', are made in the adjacent face of the washers,
to receive the ridges o, o.
The outer faces of both blocks hand h', have 4 projections n, and n³, made on
them, see Figure 4, to hold the piece of work J, which in this case is a gas cock,
but the number and position of the projections on the blocks may be varied to
accommodate different kinds of work.
To operate the chuck, the square end of the gas cock is placed between the
blocks h, h, resting against and confined by the projections n, n¹ and the jaws
of the chuck are tightened up with a wrench applied to one end of the screw B.
Then a hole can be drilled in the projecting long end of the cock, in the direction
of the arrow 1, in Figures 9 and 10, and the outside turned off.
The screw B, is then eased up a little and the cock with the blocks h, h³, are
turned a quarter turn, the spring washer b, allowing the block h, to fall back in its
socket in the plate sufficiently to allow the ridges c, to pass from one groove c¹, to
another, and the spring washer b', allowing the washers, to be pushed in so as to
allow the ridges on block ¹, to pass the grooves in the washer and as the chuck
screw B, is again tightened up, the ridges c, and o, will centre themselves correctly
in another set of the V grooves c, and o¹ again, so that the work will be accurately
held and another hole can be drilled in it in the direction of arrow 2, Figure 9.
In Figures 11, 12, and 13 is illustrated the arrangement for moving the piece
of work across the face of the chuck so that two or more holes may be drilled in the
same side of the work, perfectly parallel with each other.
Instead of the projections n, n, made on the faces of the rotating blocks h, h¹,
dovetailed grooves are made, see Figure 11, in which two blocks h², h³, are fitted to
slide so that the work J¹, can be moved laterally, as well as turned, without
releasing it, see Figure 12, in which the piece of work J', after having a hole 2,
drilled has been moved to one side to have a hole drilled at 3. The blocks h2, h3,
are provided with the usual gibs and set screws e², to make them slide snugly in the
dovetailed grooves. In Figure 13 means are shown to limit the distance that the
blocks h2, h3, may slide so that they will stop at the same place every time when
moved either way. This consists in cutting away a portion of the dovetail on the
block, and putting adjusting screws 2, in the remaining end portions of the
dovetail and placing an adjustable stop V2, in the dovetailed groove in the block h¹,
for the screws, to bring up against when moved either way to adjust it.
To stop the sliding block at points between the ends, notches V³, are made
in the other side of the sliding block 2, and a stop spring. V4, attached to the
block h, so that the end of the spring will catch in the notches and determine
the point at which the block shall stop and when the jaws are screwed up there
will be no change in the position of the work.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is: -
1. In a combination chuck the combination with the jaws of the chuck of

page_text: stationary blocks attached to the faces of the jaws, blocks held to rotate in sockets
in said stationary blocks, a spring washer arranged to bear on one of the rotating
blocks and press it out of its socket, a spring washer arranged to draw the other
rotating block into its socket in its plate, substantially as described.
2. In a chuck, the combination with its jaws of stationary blocks attached
to the faces of said jaws, blocks fitted to rotate in sockets in said stationary blocks,
a spring washer arranged to press one of said rotating blocks out of its socket in.
the stationary block, a set of radial ridges made around the socket in one of the
stationary blocks one or more radial grooves made on one of the rotating blocks
arranged to fit in said radial groove, substantially as described.
3. In a chuck, the combination with its jaws, of stationary blocks attached
to the faces of said jaws, blocks fitted to rotate in sockets in said stationary
blocks, a spring washer arranged to draw one of the rotating blocks into its
socket in its stationary block, a collar made fast in said socket and having radial
ridges made on its inner face, a washer held to turn with said one of the rotating
blocks and having radial grooves made in its face adjacent to said radial ridges to
receive them, substantially as described.
4. In a combination chuck, the combination with the jaws of the chuck, of
stationary blocks attached to the faces of the jaws, blocks held to rotate in said
sockets in said stationary blocks a spring washer arranged to bear on one of the
rotating blocks and press it out of its socket, a spring washer arranged to draw the
other rotating block into its socket in its plate, dovetailed grooves made in the
faces of the rotating blocks, blocks fitted to slide in said dovetailed grooves,
substantially as described..
Datal th 10th 1.
J
1000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.