Improvements in Devices for Automatically Feeding Articles to Screw Machine
Year: 1899

page_text: Date of Application, 10th July, 1899-Accepted, 23rd Sept., 1899
Improvements in Devices for Automatically Feeding Articles to
Screw Machine Chucke,
I, ELBERT MILTON COUCH, of 17, Sumner Street, in the City of Hartford;
County of Hartford and State of Connecticut, United States of America,
Mechanical Engineer, 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 relates to automatic screw machines, and the object thereof
is the construction of mechanism whereby pieces of an irregular, or other than
practically cylindrical contour to be operated upon by said machine, may be
successively moved into position to be grasped by the jaws of the spindle-chuck
of said machine; and means for insuring the successive presentation of such
pieces of work to said spindle-chuck always in the same position relative to the
jaws thereof, whereby said pieces will be inserted between the open jaws of the
chuck in predetermined positions and during the rotation thereof, whether the
center of the piece of work inserted between the jaws of the chuck be concentric
with the axis of said chuck, or eccentric thereto.
In the accompanying drawings
Figure 1 is a side elevation of a screw-machine having this invention applied
thereto.
Figure 2 is a plan view of a transfer-chuck, or device for grasping a piece of
work and moving it into position to be taken therefrom by the chuck of the
machine.
Figure 3 is a longitudinal section of the same.
Figure 4 is a cross section of Figure 2 on line 44, looking to the left.
Figure 5 is a similar section on line 5-5, looking to the left.
Figure 6 is an end elevation of said transfer-chuck in position in the turret
of a screw-machine.
Figure 7 is an end view of a spindle-chuck of the screw-machine showing the
cross-slide thereof and a work-holding magazine on said slide.
This view is
taken substantially on section line 7-7, Figure 1, looking to the left, and
enlarged.
Figure 8 is a plan view of the transfer-chuck cross-slide with magazine
thereon, and part of the spindle-chuck, showing the position of the parts at the
moment of engagement of the transfer-chuck with a piece in the magazine.
Figure 9 is a view of the parts shown in Figure 8, the magazine having retired
and the transfer-chuck having moved towards the spindle-chuck and presented
the piece of work taken from the magazine, to the jaws of said chuck.
Figure 10 is an end view of a spindle-chuck showing a piece of work therein,
in dotted lines, the center of which is eccentric to the axis of said chuck.
Figure 11 is an end view of a transfer-chuck showing its jaws offact from the
axis thereof.
Figure 12 is a perspective view of a piece of work showing a cylindrical boss
near one end thereof, and one side of the center of said piece,

page_text: Figure 13 is a plan view of the top of a screw machine showing an alternative
position of the work-holding magazine.
Screw machines have been heretofore made which have had magazines for
holding pieces to be operated on, mounted on the cross-slides of such machines,
which magazines have been operated so as to bring a piece of work in the magazine
into axial alinement with the spindle-chuck and which piece of work has then been
pushed by a tool on the turret into position between the jaws of said chuck, the
latter being automatically operated to grasp said piece of work at the proper time.
This device, however, is adapted only to feed, automatically, pieces which are
substantially cylindrical in cross section and which can therefore be grasped by said
spindle-chuck in any position in which said piece may be presented thereto, the
only essential condition being that the axis of the piece presented, and that of the
spindle-chuck, should be in substantial coincidence.
The construction herein presented has, however, not only all of the capa-
bilities of that above referred to but possesses the further capacity of transferring
to a spindle-chuck during the rotary movements thereof, pieces whose contour
is most irregular; and, furthermore, can, if desired, be adjusted to transfer
them to said chuck in such a position as will locate the centers of said pieces
eccentric to the axis of said chuck. For instance a rectangular block may be
transferred to and inserted between the open jaws of a spindle-chuck during the
rotation of the latter; in such position that the center of rotation of said block
may be located, at any desired point thercon, either at, or outside of, the center
thereof. And the device is so constructed that cach jaw of the spindle-chuck
will engage the same portion of one piece that it engaged on the preceding
picces of work. That is, certain parts of the piece are presented to certain jaws
of the chuck.
"
-1 1 ...
:
Referring now to the drawings, Figure 1 represents a well known type of an
automatio. screw-machine in which 2 represents the frame thereof; 3, the cam-
wheel-shaft having thereon the cam-wheel 4 for operating the turret-slido 5,
provided with the usual turret 6, and the cam-wheel.7, for moving the chuck-
operating block 8. The cam-wheel 9, which operates the cross-slide 10, is also
supported on this shaft and the latter is driven by the usual worms and gear
connections shown on the right-hand end of said Figure 1, whereby the various
speeds of rotation of said shaft 3 are imparted thereto through the operation
of the belt-shifting devices common to machines of this class, whereby the
speed of the worm-shaft 12 is controlled; all of which is shown in Figure1
and is too well known to require detailed description, and are illustrated in this
application only for the purpose of showing means for effecting the various
movements of the parts of the screw-machine which are necessary to a clear
understanding of this invention; but which form no part thereof and for which
other means performing the same functions may be substituted, if desired...
The spindle 13, of the machine, is provided with a suitable automatically
operated chuck which may be of any pattern suited to take the piece operated.
on by the machine...
:
The chuck 14, shown herein, is provided with two radially moving jaws 15,
this form being best adapted to receive and hold the rectangular piece of work 16,
which has been chosen as illustrative of the operation of the mechanism which
forms the subject of this invention:
This chuck is operated by the longitudinally moving cone 17, on the spindle 13,
operating the right-angled levers 18, which engage a chuck-actuating member
located axially in said spindle, all of which is common to machines of this class:
The device by which the transfer of pieces of work, automatically, to "the
spindle-chuck 14, is accomplished, is illustrated in Figures 2, 3, 4; and, 5, and
the manner of its co-action with the spindle-chuck to transfer to the latter a
piece of work is particularly illustrated in Figures 8 and 9 of the drawings. i.
This transfer device, or chuck, as it will be hereinafter termed, is supported
in any convenient way in the side of the turret 6, of the machine, in the same
.
"
'

page_text: planc as the other turret-tools which operate on the piece of work held in the
spindle-chuck, and is constructed as follows:
Te
Lis
The barrel 19, of the chuck, (cylindrical in cross-section,); is provided at one
end with the concentric stem 20 which enters a tool-socket of the turret and is
secured therein.,
On the end of said barrel 19, from which the stem, 20 pro-
jects, is a flange 21.
The cylindrical shell 22, of the chuck, has a free fit on said barrel 19, and the
forward end of said shell is closed, save for the central screw-threaded aperture
therein into which is screwed the head 23, to which the spring-jaws, 24 are
secured. These spring-jaws may be made of such, shape as the form of the
piece of work to be held by them may require, and the form of the head 23
may be altered to adapt it to the reception of the work-grasping jaws 24.
On the end of the shell 22, adjacent to the flange 21, of the barrel, 19, is screwed
a cap 25, the center of said cap being turned out to receive said annular
flange 21, as shown in Figure 3, whereby said cap is given a bearing
onl said flange and is prevented from moving towards the barrel;, but is
permitted to move in the opposite direction for purposes to. bé described
further on. Said barrel 19 and stem 20 are bored out axially to receive
the friction-stem 26. This stem is provided with an annular head 27
which has a somewhat smaller diameter than the shell 22, and a compressible
washer 28 is interposed between the said head 27 and the end of the barrel-19;
by turning up the nut 29 on the end of said stem which projects, beyond the
end of the stem 20, said washer may be compressed to such an extent as may be
required to cause a certain amount of frictional resistance to be applied to the
said stem to prevent the too easy rotation thereon in its support.
Said friction-stem 26 is provided with a hub-like projection 26 which extends
forward towards the spring-jaws 24, into a central perforation in the head 23.
The purpose of this hub-like projection and the frictional resistance to the
stem 26 will be referred to further on.
The construction thus far described consists of the shell 22 carrying the spring-
jaws 24, for grasping a piece of work; said shell being revolubly supported on
said barrel 19, and the cap on the opposite end of the shell bearing on the
flange 21 on the barrel.
It is requisite to the. proper operation of the transfer-chuck, however, that
the shell 22 should be freely revoluble only in a direction coinciding with the
revolution of the spindle-chuck 14, and revoluble to a limited degree in a contrary
direction, and to that end'a cut 30 is made in the surface of the barrel 19 trans-
versely to its axis, near said flange 21 (see Figure 5) and a pawl 31 is pivotally
supported therein, under which is a spring 32 to hold the end of said pawl against
the inner wall of the shell 22.
A step 34 is formed on the interior wall of the shell contiguous to said pawl,
with which the latter may engage only when the shell is rotated in a direction
contrary to the direction of revolution of the spindle-chuck. The normal position
of the shell relative to the barrel is with the pawl 31 in engagement with said
step 34 in the wall of the shell, and in this position the spring-jaws 24 will be
in position to receive a piece of work to be transferred to the spindle-chuck and
the sole function of the said pawl engagement between the shell 22 and the
barrel 19 is to determine the position of said jaws relative to the pieces to be
received by them. In this case the pieces of work 16, shown in position between
the spring-jaws 24, in dotted lines in Figure 7, and which are moved into
position to be automatically grasped by them by means to be described, must be
turned, before they are presented to the spindle-chuck, from the position shown
in Figure 8 to that shown in Figure 9, in plan, and in end elevation in dotted
lines in above referred to Figure 7, as it is much easier to hold said pieces firmly,
by their corners, than by their opposite parallel sides.
Aftor said pieces have been transferred and grasped by the spindle-chuck,
the transfer-chuck must be returned again to its normal position (shown in

page_text: "
Figure 8) for engagement with the next piece of work, and these opposite rotary
movements are accomplished as follows:-
It is obvious that if an irregularly shaped piece of work, like that shown, is
to be inserted between the open jaws of a spindle-chuck, while the latter is
rotating, and that if said piece can only be inserted therein when presented to
said jaws in a certain position, that means must be provided for presenting said
piece to said chuck-jaws in the position in which it can be inserted therein,
and that the transfer-chuck must then be rotated in coincidence with said jaws
while the piece, still in the transfer-chuck, is moved towards and into said jaws,
and the laiter are closed thereon:
:
And to effect this coincident rotation of the spindle-chuck and transfer-chuck,
a bar 35 is supported on said shell 22, in a position parallel with the axis of
said shell and projecting far enough beyond the end of the transfer-chuck
to be engaged by a lug 36 on the face of the spindle-chuck, when the transfer-
chuck is moved up towards the spindle-chuck, said engagement taking place
before the piece of work in the transfer-chuck has approached the spindle-chuck
near enough to enter the piece of work between the jaws of the latter.
Said bar 35 is adjustably supported on said shell 22 on a collar 37; and there-
fore may be so placed relative to the normal work-receiving position of the
jaws of the transfer-chuck, that when said bar 35 engages said lug 36, said shell
may be given such a degree of rotation on the barrel 19 that said piece of work
may be brought into any position desired relative to the jaws of the spindle-
chuck, and will then continue to rotate with said spindle-chuck while maintain-
ing said relative position, and the movement of said transfer-chuck towards
said spindle-chuck will then cause said piece of work to enter between the
jaws of the latter in the position necessary to permit it to be grasped by the
latter when they are automatically operated for that purpose by the movements
of the machine, as described:
The return of the jaws to normal work-receiving position, after the transfer-
chuck has delivered its piece of work, as stated, is effected by the spiral-
spring 38 one end of which is secured to the shell 22, at 39, and the opposite end
of which is secured to the hub-like projection 26 of the stem 26, sufficient space
between the end of the shell 22 and the head 27 on said stem for the reception
of said spring, being provided.
It is seen from this construction that as soon as the bar 35 encounters the
lug 36, that the shell 22 will be rotated against the tension of said spring until
the latter has been wound around the hub 20 and that the spring will then
cause the stem 26 to rotate in its support, and that the rotation of said stem will be
under a certain frictional resistance, applied thereto by the compressible washer 28
between the head 27 and the end of th barrel. Hence, as soon as the transfer-
chuck backs off away from the spindle-chuck, and the bar 35 is withdrawn from
engagement with the lug 36, the rotation of the stem 26 will cease and the
tension of said coiled spring will cause the shell 22 to rotate back to a normal
position in a direction contrary to the rotation of the spindle-chuck, and its
movement is arrested when it arrives at that normal position by the engage-
ment of the step 34, with the pawl 31, as described, said step, during the rotation
of the shell 22 in the opposite direction (that is in coincidence with the spindle-
chuck) passing under said pawl at each revolution, the pawl, being hung on the
barrel 19, remaining stationary.
It is therefore obvious that by means of this invention, a piece of any shape
may be made to register with the jaws of a spindle-chuck adapted to receive it,
and that pieces of work may therefore now be fed into the spindle-chuck of a
screw machine while said chuck is rotating, which heretofore it has been
necessary to insert by hand in the chuck while the latter is at rest.
Another very important feature of this invention is illustrated in Figures 10
and 11, and shows the adaptability of this device in effecting the presentation

page_text: of pieces of work to be grasped by the spindle-chuck in a position eccentric to
the axis thereof and during the rotation of said chuck.
To accomplish this, it is obvious that the piece of work must be grasped by the
transfer-chuck in such a manner that when said transfer-chuck is caused to
rotate in coincidence with said spindle-chuck the piece to be grasped by the
jaws of the latter must be in position to enter said jaws when moved forward by
the transfer-chuck, as described.
Ordinarily, it is necessary to offset the jaws of the transfer-chuck from their
center of rotation, as in Figure 11, but it sometimes happens that said jaws
may remain in their concentric position while the jaws of the spindle-chuck only
are offset, as, for instance, in transferring to the spindle-chuck pieces having.
the form of a double eccentric.
To conduce to a clear understanding of this feature of the invention, the
piece of work shown illustrating this feature of the invention in Figures 10
and 12, is similar to the piece shown in the other figures of the drawing, except
that a cylindrical boss is shown on said piece near the lower extremity thereof,
and to grasp this piece of work so that the center of said boss shall register
with the center of rotation of said spindle-chuck, the jaws of the latter must be
adapted to receive said piece, and the jaws of the transfer-chuck to be offset
from the center so as to grasp said piece in such position that the center of that
part of the piece of work to be operated on by the turret-tools will coincide with
the center of rotation of the spindle-chuck.
To adjust the transfer-chuck relative to the spindle-chuck so as to insure the
presentation of successive pieces of work to the latter, always in a position to be
engaged by said spindle-chuck, assuming, of course, that said pieces can be
grasped by the spindle-chuck only when they are presented in a certain way,
the transfer-chuck is loosened in its socket in the turret, and the collar 37 is
loosened from the shell 22. The shell is then rotated to such a degree as to
locate the spring-jaws 24 in a proper engaging position relative to the piece to
be grasped by them, and the barrel of the chuck is then turned on its axis,
the shell being held stationary until the pawl 31 engages the step 34 in said shell,
and the spring 38 is put under a certain tension; the barrel is now secured in.
its socket in the turret and the shell may be released, said spring holding the
latter firmly in engagement with the pawl on said barrel.
The jaws of the transfer-chuck are now in their normal work-receiving position
and the transfer-chuck having a piece of work between its said jaws is now
moved up to the spindle-chuck and the shell rotated on the barrel to the position
required to make the piece of work register with the jaws of said spindle-chuck,
and this position having been attained, the collar 37 is moved around on the
barrel until the bar 35 engages with the lug 36 ou said chuck, and the collar 37
is then secured to said shell in this position.
When the bar 35 is withdrawn from engagement with the lug 36, the spring 38
will cause said shell to rotate back to normal position again and whenever said
lug 36 engages the bar 35, the piece of work in the transfer-chuck will be
presented to the spindle-chuck in the same position relative to the jaws thereof
that the parts occupied when adjusted and set, as above described.
The form of the work-grasping fingers or jaws of the transfer-chuck may be
varied infinitely, as well as their position relative to the center of said chuck to
adapt the latter to automatically feed pieces of work of a great variety of forms
to the spindle-chuck of a machine of the class herein shown, and all while the
chuck is rotating, thus greatly increasing the efficiency of the machine.
The particular manner of feeding the pieces of work into the jaws of the
transfer-chuck will, of course, vary with varying classes of work.
For pieces of work, such as are shown in connection with the drawings form-
ing part of this application, a convenient manner of doing it is to provide a
tubular magazine 40, partly shown in side elevation in Figure 1, front elevation
in Figure. 7, and in sectional plan in Figures 8 and 9.

page_text: Two sides 41, 42, at the bottom of said magazine, are left open for a space
somewhat higher than the height of one of said pieces, 16, and a cut 43 is made
in the side wall of said magazine to permit the entrance of one of the spring-
jaws 24, which grasp this piece. That part of the magazine opposite the open
side towards which the transfer-chuck advances, is rigid, and said pieces abut
thereagainst, as the advancing transfer-chuck presses the ends of said jaws
against said piece, which jaws, by said movement of the chuck, are sprung open
and sieze the piece.
In Figures 1, 7, 8, and 9, said magazine is shown mounted on the cross-slide 10
.of the machine and said slide is operated at the proper time to move the niaga-
zine transversely of the machine to the position it occupies in Figure 8, which
will bring the lower piece of work in said magazine in proper position to be
engaged by the spring-jaws 24 of the transfer-chuck, as the turret moves it
forward towards the spindle-chuck. This forward movement of the transfer-
chuck is in two steps, the first advancing it far enough to bring the face of
the bead 23 up against the end surface of the piece of work in the magazine,
with the jaws 24 grasping opposite sides thereof, at which point said transfer-
chuck comes to a stop. Figure 8 shows this chuck approaching this position..
As soon as said first movement of the chuck ceases, the cross-slide 10 is
operated to move the magazine back again to the position shown in Figure 9,
leaving the transfer-chuck free to move again towards the spindle-chuck. As this
transverse movement of the magazine takes place, the piece of work engaged by
the transfer-chuck emerges therefrom through the opening 42, in the side of the
magazine, and those pieces in the magazine above said lower piece then descend,
by gravity, bringing another piece into position to be subsequently engaged by
the transfer-chuck.
As soon as the magazine has moved out of the path of the transfer-chuck,
the second forward movement of the latter takes place and the chuck again
moves forward and the bar 35 thereon engages with the lug 36, on the spindle-
chuck to bring the piece of work in said transfer-chuck into registering position
with the open jaws of the spindle-chuck, the said jaws having been opened at
the proper time by the operation of the block 8, as described.
This second movement of the transfer-chuck continues until the piece of work
is in position to be grasped by the spindle-chuck, and this being accomplished
(by another movement of the block 8) the transfer-chuck retires. Figure 9
shows the position of the parts at the beginning of this retrograde movement
of the transfer-chuck.
Having reached the end of its rearward movement, the turret 6 is rotated to
bring its tools into line for operating on the piece in the spindle-chuck, and
these operations take place in the manner common to machines of this class,
successive partial rotations of the turret eventually bringing the transfer-chuck
again into position to grasp a new piece of work in the magazine which has again
moved forward into the line of movement of the transfer-chuck, and deliver it to
the spindle-chuck when the finished piece therein has been ejected therefrom.
In Figure 13, the magazine is shown in a different position, viz.-supported
in a fixed position on the frame of the machine and extending over the turret-
slide in such position that the transfer-chuck will engage with one of said pieces
of work 16, at the proper time upon the rearward movement of the turret.
It is to be understood that neither this particular magazine nor any magazine
forms an essential part of this invention which lies primarily, in the means
shown, or their equivalents, for successively presenting pieces of work to the
chuck of a machine to be grasped thereby, and during the rotation thereof always
in the same position, relative to a particular point on said chuck, whereby said
piece of work will always be grasped at, predetermined points thereon.
As it sometimes happens that pieces of work will vary in thickness, means are
provided to permit a slight yielding movement of the shell 22, lengthwise on
the barrel 19, should a piece of work thicker than usual be engaged by the jaws

page_text: of the transfer-chuck and come to a bearing against the head 23 of the transfer-
chuck before the latter has finished the first stage of its movement to engage
said piece in the magazine.
It is also obvious that if said piece of work is of such thickness as to bottom
on the end of the said head of the transfer-chuck, its opposite end will also
come..into contact with the face of the spindle-chuck as the transfer-chuck:
carries said piece forward between the jaws of said spindle-chuck, before the
transfer-chuck has finished the second part of its movements.
Said endwise yielding movement of the shell 22, to which the jaws 24 are
secured, is provided for as follows:
A space 44 is left between the end of said shell and the flange 21 on the
barrel 19, and a ring 45 secured to pins 46 (which have a free sliding movement
in holes provided therefor in the end of said shell) bears on said flange 21 and
is held thereagainst by springs 47, located in sockets 48 in the end of said shell.
The resistance of these springs 47 is sufficient to prevent any compression
thereof by any endwise pressure the shell niay be subjected to while the spring-
jaws 24 are being forced into engagement with the piece of work held in the
magazine, but should the head 23 of the transfer-chuck come in contact, as
stated, with said piece of work before said chuck has finished its forward móve="
ment during the first of the two inovements of said chuck, or should said piece
of work encounter the face of the spindle-chuck before the transfer-chuck has
finished the second movement, said shell will yield endwise and thus any possible.
injury to the parts be avoided.
As soon as the excessive pressure on said shell is relieved, the springs 47 will
return it to its normal position again relative to the barrel, viz.,—to the position
shown in Figure 3.
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:
:
1. In a machine of the class described, a continuously rotating member which
receives and holds a piece of work to be operated upon, a second member
normally non-rotative which receives and delivers said piece to said first-named
member, and means for effecting, temporarily, the coincident rotation of said
two members on a common axis, by the inter-engagement thereof in advance of
the contact of the work with the member which holds it to be operated upon,"
substantially as described.
2. In a machine of the class described, a' rotatable member which receives
and holds a piece of work to be operated upon, a second rotatable member which
receives and delivers said piece to said first-named member, means for effecting,
independent of the piece of work held by said second member, the coincident
rotation of said two members and for moving one of them towards the other
during said coincident rotation, substantially as described.
"
T
3: In a machine of the class described, comprising a rotatable chuck, a rotatable
member which receives and delivers a piece of work to said chuck, means for
moving one of said rotatable members. towards and into engagement with the
other in advance of the entrance of said piece of work into said chuck, whereby
said work-delivering member is rotated in one direction, and means for rotating
said delivering member in the opposite direction back to its normal position
upon the disengagement of said member and said chuck, substantially as
described.
4.- In a machine of the class described, a member receiving and holding a piece
of work to be operated upon, a second member which receives and delivers said
piece to said first-named member; means for moving said delivering member
towards and from said liolding meinber and rotating the latter, and for effecting,
temporarily, independent of the piece of work, the coincident rotation of snid
two members on a conimon axis, substantially as described.

page_text: 5. In a machine of the class described, a rotatable member which receives and
holds a piece of work to be operated upon, a second rotatable member which
receives and delivers a piece of work to said first-named member, and means
independent of the work for effecting the temporary coincident rotation of said
two members, and for bringing a given point on each of said members into a
plane passing through the axis of said members, substantially as described.
6. In a machine of the class described, a continuously rotating member receiv-
ing and holding a piece of work to be operated upon, a second member which
receives and delivers said piece to said first-named member and is rotatable
continuously in one direction, and to a limited degree in the opposite direction,
means for moving said delivery member towards and from said holding
member and for effecting, temporarily, the engagement of said second member
with said continuously rotating work-holding member, independent of the work,
whereby said two members may rotate in unison before the work is grasped by
said holding member, substantially as described.
7. In a machine of the class described comprising a chuck for receiving and
holding a piece of work to be operated upon, a member which receives and
delivers a piece of work to said chuck, which delivering member consists of a
fixed part, a part supported and continuously rotatable on said fixed part, in one
direction means of engagement between said fixed and rotatable parts for
limiting the rotation of said movable part in the other direction and determin-
ing the normal position of one of said parts relative to the other, a work-grasping
device on said rotatable part and means of engagement between said chuck and
the rotatable part of said delivering. device, substantially as described.
8. In a machine of the class described, the combination of a member which
receives and delivers a piece of work to said chuck, which member consists of
a fixed barrel, a shell thereon rotatable continuously in one direction, a part in
said barrel rotatable thereon under an adjustable resistance, a yielding connection
between said shell and said frictional part, a stop between said shell and said
barrel whereby the normal relative position of said parts is determined; devices
on said shell for grasping a piece of work, and means for moving said work-
delivering member towards and from said chuck and into engagement therewith
whereby said member may temporarily rotate in coincidence with said chuck,
substantially as described."
9. In a machine of the class described; the combination with a chuck having
plurality of jaws, the cominon center of whose work-engaging ends is located one
side of the center of rotation of said chuck, of a rotatable work-receiving and
delivering member adapted to hold a piece of work eccentric to its center of
rotation, and means independent of the work for coincidently rotating said chuck
and said work-delivering member and for bringing said eccentrically held prece
of work into registering position with said chuck-jaws, and means for operating
the latter, substantially as described.
10. In a machine of the class described, a rotatable member which receives and
holds a piece of work to be operated upon, a second rotatable member which
receives and delivers said piece to Baid first-named member, means, independent
of the work for effecting the coincident rotation of said two members and for
moving one of them towards the other during said coincident rotation, combined
with a container for said pieces of work which are withdrawn therefrom by aaid
second member, substantially as described:
11. The combination with a continuously rotating receiving-chuck, the
common center of whose jaws is eccentric to its axis of rotation, which receives
and holds pieces of work to be operated upon, of a member movable towards. and
from said chuck, which receives and delivers said pieces to said chuck, means for
effecting the inter-engagement of said chuck and said member, whereby their
coincident rotation as one piece will begin in advance of the contact of the work
with said chuck, a container for said pieces, means for intermittently moving

page_text: said container into a position intercepting the line of movement of said deliver-
ing member, and work-grasping jaws on said member whereby a piece of work
is withdrawn from said container, substantially as described.
12. In a machine of the class described, the combination with a chuck having
a plurality of jaws, the common center of whose work-engaging ends is located
one side of the center of rotation of said jaws, means for rotating said chuck,
and means for automatically placing a piece of work between the jaws of said
chuck during its rotation, and suitable devices for opening and closing said jawa,
substantially as described.
13. In a machine of the class described, comprising a rotating chuck having
work-engaging jaws, a rotatable member which receives and delivers a piece of
work to said chuck, suitable mechanism for moving said rotatable piece-deliver-
ing member towards said chuck and into engagement therewith in advance of
the contact with the jaws of said chuck, of a piece of work held by said deliver-
ing member, substantially as described.
14. The combination with a work-receiving chuck, of a device for delivering
a piece of work thereto, and means of engagement between said chuck and said
device, whereby they are caused to rotate in unison, and permitted to move one
towards the other during said rotative engagement, substantially as described:
Dated this 2nd day of June 1899.
ELBERT MILTON COUCH,
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.