IMPROVEMENTS IN CHUCKS AND APPARATUS EMPLOYED IN THE DECORATION OF CHINA AND POTTERY WARE APPLICABLE ALSO TO LATHES MICROSCOPIC TURN TABLES AND OTHER LIKE PURPOSES IN WHICH A CHUCK MOVEMENT IS REQUIRED
Year: 1882

page_text: LETTERS PATENT to James Morrison Alling of 4 Cullum Street in the City of
London for an invention of "IMPROVEMENTS IN CHUCKS AND APPARATUS
EMPLOYED IN THE DECORATION OF CHINA AND POTTERY WARE APPLICABLE ALSO
TO LATHES MICROSCOPIC TURN TABLES AND OTHER LIKE PURPOSES IN WHICH A
CHUCK MOVEMENT IS REQUIRED "A communication from abroad by Arthur
Young Alling of Rochester State of New York United States of America
PROVISIONAL SPECIFICATION left by the said James Morrison Alling
at the Office of the Commissioners of Patents on the 25th March 1882.
JAMES MORRISON ALLING, of 4 Cullum Street in the City of London.
IMPROVEMENTS IN CHUCKS AND APPARATUS EMPLOYED IN THE DECORATION OF
CHINA AND POTTERY WARE APPLICABLE ALSO TO LATHES MICROSCOPIC TURN TABLES
AND OTHER LIKE PURPOSES IN WHICH A CHUCK. MOVEMENT IS REQUIRED A
communication from abroad by Arthur Young Alling of Rochester State of New
York United States of America.
This Invention relates to certain improvements in
particularly to be employed in the decoration of articles
capable of being used for many other purposes.
"
chucks, designed more
of china or pottery, but
The invention consists in providing the centering jaws of this improved chuck
with an elastic cushion interposed between then and the article of china or pottery
ware, for the purpose of compensating for the irregularities in the outline of the
latter.
The invention also consists in the construction and arrangement of mechanism
for operating the centering jaws, as hereinafter more fully set forth.
A hub is cast with the face plate turning freely on a spindle projecting from the
base and provided with a milled thumb nut.
The face plate is provided with curved grooves in which jaws slide uniformly to
and from the centre. The jaws are fastened to arms which are pivoted to the
under side of the face plate,

page_text: The arms are joined together by bars so that they move equally to and from
the centre.
One of the arms is provided with a fixed screw which turns in a nut swivelled
in the arm.
In the operation of this improved chuck the screw, being revolved by means of
its milled head carries the nut forward or backward thereby causing the arms to.
swing about their pivots and the jaws to move toward or away from the centre of
the face plate.
The bars are pivoted to the arms at suitable points and one arm is raised above
another by making the hubs sufficiently, long to enable the arms to clear each
other.
The screw carrying the nut is provided with collars fitted on each side of a
divided lug, attached to the rim of the face plate, by which the screw is prevented
from sliding lengthways. The nut may be pivoted within one of the arms in a
slot which permits the swinging motion of the arm while the screw remains
stationary; or the screw may be allowed to swing slightly, to accommodate itself
to the motion of the arm.
I
The jaws are provided with hubs passing through slots in the face plate and
pivotted to the ends of the swinging arms by a screw or pin.
For the purpose of holding articles of china or pottery ware during the process
of decoration, the jaws are provided with a rubber ring, which adapts itself to any
irregularities in the outline of the article operated upon and holds the same in
place with sufficient pressure to secure it centrally on the face plate without danger
of breakage.
For other purposes, the rubber-bands may be omitted, and the jaws made of any
preferred form... For wood turning the jaws of this improved chuck may be
toothed or serrated on their inner faces.
A modified arrangement of the device for moving and clamping the jaws may
be employed in which the pivoted end of an arm is provided with worm gear,
meshing with the worm provided with a thumb nut and attached to the under
side of the face plate in any convenient way.
By revolving the thumb nut in one direction or the other an arm is caused to
swing about its pivotal point and the jaws are opened or closed on the object to be
chucked which is secured to the face plate by pressing the jaws against it by the
pressure produced by the worm.
The face plate is advantageously made thin and provided with ribs about its
edge and about the slots therein to secure strength and lightnoss.
A spindle rising upward from any suitable table or base supports the hub of the
face plate, which turn freely thereon.
'
The operation of this improved chuck will be readily understood from the
preceding description. The jaws are separated by turning the thumb nut, the
article to be chucked is placed on the face plate, and secured thereon by pressing
the jaws against it, by the action of the screw.
After the article of pottery ware has been centred on the face plate, the latter is
revolved by the. operator turning the milled head with one hand while the other
hand is left free to ornament the vase, plate or other object in any preferred
manner.
The jaws of this improved chuck are round, so that they present a similar surface
to the object to be chucked in any position which they may occupy in the curved
slots.
The round jaws provided with grooves also afford a simple and effective mode of
attaching the rubber rings to them.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Morrison Alling in the Great Scal Patent Office on
the 25th September 1882.
JAMES MORRISON ALLING, of 4 Cullum Street in the City of London.
* IMPROVEMENTS IN CHUCKS AND APPARATUS EMPLOYED IN THE DECORATION OF
CHINA AND POTTERY WARE APPLICABLE ALSO TO LATHES MICROSCOPIC TURN TABLES
AND OTHER LIKE PURPOSES IN WHICH A CHUCK MOVEMENT IS REQUIRED" A
communication from abroad by Arthur Young Alling of Rochester State of New
York United States of America.
"
This invention relates to certain improvements in chucks designed. more
particularly to be employed in the decoration of articles of china or pottery but
capable of being adapted to and used for many other purposes.
The Invention consists in providing the centering jaws of this improved chuck
and apparatus with an elastic cushion interposed between them and the article of
china or pottery ware for the purpose of compensating for the irregularities in the
outline of the latter.
The invention also consists in the construction and arrangement of mechanism
for operating the centreing jaws as herein after more fully set forth.
The accompanying Drawings represent this improved chuck and apparatus in
which Figure 1 is a plan the face plate A being indicated by dotted lines so as to
show the mechanism by which the jaws are operated.
Figure 2 is a side elevation and Figure 3 a section of one of the jaws on a larger
scale.
A is the face plate, B the hub which is cast with the face plate A turning freely
on the spindle N projecting from the base M and provided with a milled thumb
nut C.
The face plate is provided with curved grooves S: S¹. S². in which jaws J. J. J³.
slide uniformly to and from the centre. The jaws are fastened to arms H. H³. H².
which are pivoted to the under side of the face plate at c. c². c²,
The arms are joined together by bars E. E so that they move equally to and
from the centre.
One of the arms H is provided with a fixed screw D which turns in a nut I
swivelled in the arm G.
In the operation of this improved chuck the screw D being revolved by means of
its milled head F carries the uut I forward or backward thereby causing the
arms H H H² to swing about their pivots c. c. c: and the jaws to move toward or
away from the centre of the face plate A.
The bar E is pivoted to the arm H at d and to the arm H¹ at c and the arm H¹
is connected to the arm H2 by the bar E¹ pivoted at g on H' and at h on H² one
arm is raised above another by making the hub sufficiently long to enable the arms
to clear each other.
The positions of the jaw carrying arms when the jaws are widely separated is
indicated by the dotted lines H H*H*
The screw D is provided with collars fitted on each side of a divided lug a
attached to the rim of the face plate by which the screw is prevented from sliding
lengthways. The nut I may be pivoted within the arm G in a slot which permits
the swinging motion of the arm while the screw D remains stationary; or the
screw may be allowed to swing slightly to accommodate itself to the motion of
the arm.
The jaws J. J. J2. are provided with hubs passing through the slots in the face
late and pivoted to the ends of the swinging arms by a screw or pin as shewn."

page_text: •
For the purpose of holding articles of china or pottery ware during the process
of decoration, the jaws are provided with a rubber ring 6 which adapts itself to any
irregularities in the outline of the article operated upon and holds the same in
place with sufficient pressure to secure it centrally on the face plate without danger
of breakage.
For other purposes however the rubber bands may be omitted and the jaws
made of any suitable form. For wood turning the jaws of this improved chuck
may be toothed or serrated on their inner faces.
A modified arrangement of the device for moving and clamping the jaws is
shown by Figure 4 in which the pivoted end of the arm H is provided with toothed
quadrant p meshing with the worm D provided with a thumb nut F and attached
to the under side of the face plate in any convenient way.'
By revolving the thumb nut F in one direction or the other an arm' H is caused
to swing about its pivotal point c and the jaws are opened or closed on the object
to be chucked which is secured to the face plate by pressing the jaws against it by
the pressure produced by the worm.
The face plate is advantageously made thin and provided with ribs about its edge
and about the slots S. S¹. therein to secure strength with lightness.
A spindle N shown by dotted lines rising upward from any suitable table or
base M supports the hub B of the face plate which turns freely thereon.
K is a universal rest supported in a socket carried by the base M and capable of
adjustment by set screws to any desired position as shown.
Figure 5 shows a perspective view of the apparatus in use.
The operation of this improved chuck and apparatus will be readily understood
from the preceding description. The jaws are separated by turning the thumb
nut F the article to be chucked is placed on the face plate and secured thercon by
pressing the jaws against it by the action of the screw.
After the article of pottery ware has been centred on the face plate the latter is
revolved by the operator turning the milled head C with one hand while the
other hand is left free to ornament the vase plate or other object in any suitable
manner.
1
The jaws of this improved chuck are round so that they present a similar
surface to the object to be chucked in any position which they may occupy in the
curved slots.
The round jaws provided with grooves also afford a simple and effective mode of
attaching the rubber rings to them.
It will be evident to a competent mechanic that the mechanism constituting this
improved chuck may be readily applied to lathes microscopic turn-tables and other
like purposes in which a chuck movement is required.
Having thus described the nature of the invention communicated to me from
abroad I would remark that I do not claim any of the mechanical parts separately
which are well known and in common use neither is the invention limited to the
exact details herein described whilst the novel features are retained But what I
claiin on behalf of the said Arthur Young Alling is:-
First In a chuck and apparatus for holding articles of pottery ware the improved
arrangement and combination with the face plate A of the movable jaws J. J. J²
provided with an elastic cushion substantially as and for the purposes hereiubefore
described and represented in the Drawings annexed.
Second-The improved arrangement and combination with the slotted face
plate A of the movable jaws J. J. J2 pivoted arms H H'H' connecting bars E E
and a screw D substantially as and for the purposes hereinbefore described and
represented in the Drawings annexed.
Third-The improved arrangement and combination with the face plate A of the
movable jaws J. J. J. provided with grooves for the reception of the elastic
bands b. b. b. substantially as herein before described and represented in the
Drawings annexed,

page_text: Fourth-I claim the improved general arrangement construction and combination
of mechanical parts or apparatus constituting the improved chuck mechanism
arranged to act substantially in the manner and for the purposes hereinbefore
described and represented in the Drawings hereto annexed.
In witness whereof I the said James Morrison Alling have hereunto set
my hand and seal this Twenty fifth day of September in the year of
our Lord One thousand eight hundred and eighty two.
Witness
J G TONGUE
Patent Agent
34 Southampton Buildings
Chancery Lane W.C.
J. M. ALLINU.