Improvements in Lathes for Irregular Shapes.
Year: 1895

page_text: Date of Application, 13th Aug., 1895-Accepted, 26th Oct., 1895
COMPLETE SPECIFICATION.
Improvements in Lathes for Irregular Shapes.
I, HENRY WILLIAM NORTON COLE, of No. 554 Carlton Avenue, in the
City of Brooklyn, in the County of Kings and State of New York, 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 the shaping or finishing or turning of irregular shapes
and is embodied in a machine or lathe which may do the work of either cutting,
grinding or polishing or otherwise shaping or finishing the irregularly shaped
articles. In such machine or lathe the blauks or pieces of material to be shaped
or the partly or wholly shaped articles are fed by rollers or other suitable feeding
and guiding mechanism so that they will be acted upon by one or more cutting
tools, grinding or polishing wheels or tools, or other shaping or finishing tools
(to be referred to hereinafter by the general designation of tools) which are
caused to rotate upon their axes and are at the same time caused to revolve
about the articles in an orbit parallel to the contour desired to be produced in
the articles so as to approach to and recede from the axis of revolution in
accordance with the irregular contour of the articles. The tools are thus guided
and controlled by a guide having sections or portions of different shape and of
different dimensions, and as the blanks or partly finished articles are fed under
the tools, different portions of this guide are caused to control the movement of
the tools. Mechanism is provided for causing the movement of the guide
relatively to the tool carrying parts, such mechanism consisting preferably of a
cam and connecting parts operating to move the guide. Mechanism is provided
for starting the operation of said cam and connected parts upon the entry of a
blank or partly finished article into proper position for the tools to do their work
upon the same, and for stopping the operation of said cam and connected parts after
the completion of the cycle of operations upon that article, and for starting the
operation of said parts when the next blank or article is inserted, and so on, whereby
the same cycle of operations is repeated upon each one of the blanks or articles that
are successively fed through the machine. One of the objects of my invention is
to greatly reduce the specd at which the tool carrying and guiding parts are caused to
operate, so as to greatly diminish the centrifugal force or pressure exerted upon
these parts, and in my improved machine the tool carrying parts have a
comparatively slow rotation and the tools are revolved about the article at a
correspondingly slow speed, while the tools themselves are caused to rotate upon
their axes at as high a speed as is desirable. Thus the high speed of the operating
surfaces of the tool which is necessary in this class of machines is accomplished
with a slow speed of the tool guiding and carrying parts, and but little, if any,
centrifugal pressure upon these parts. Another object of my invention is to
produce in the articles cross-sectional contours not only of different dimensions
but also of different shapes at different points throughout the length of the
article, and according to my invention different portions of the same diameter may
have different shapes of cross-sections or the same cross-section as may be desired
and thus the shape of the finished article may be made up of portions of elliptical
cross-section, portions of circular cross-section and portions of any regular or
irregular cross-section within the large range of variations that may be produced
upon my improved machine.
I have shown in the accompanying drawings a machine designed to produce
hammer handles and embodying my invention, but it will of course be evident that

page_text: with a slightly different form of guide the machine may be adapted to the
production of hatchet handles and innumerable other articles.
Figure 1 is a side elevation, Figure 2 a plan view, Figure 3 a rear end elevation,
and Figure 4 a front end elevation of such machine. Figure 5 is a longitudinal
vertical section of the same taken through the centre of the machine. Figure 6
is a section of the same on the line 6-6, Figure 5, and Figure 7 is a section of the
same on the line 7-7, Figure 5.
Figure 8 is a longitudinal vertical central section of a cutter head and guide
operating parts showing modifications in construction, and
Figure 9 is a front end elevation of the parts shown in Figure 8.
The various working parts of the machine are supported by a frame which may
be of any suitable construction and is shown as consisting of the bed plate a and
supporting legs a' and various standards secured to or extending upward from said
bed plate a.
The feeding mechanism for the blanks or partly finished articles is shown as
comprising the three sets of V-grooved feed rollers bb, bb and 62 62, and these
several feed rollers are fitted to revolve in bearing boxes which have a vertical
sliding movement in the standards e c, c¹ e¹ and ec, and these feed rollers are
normally pressed toward each other with a yielding pressure so as to allow for the
irregular shapes of blanks or articles, and are always maintained in symmetrical
positions so as to centre the blank or article fed therethrough, by means of the
levers dd, d' d' and d² d², said levers being pivoted in the standards C, c¹ and c²,
respectively, and the upper and lower levers of each set being coupled together, as
by the link e in the first set, el in the second set, and e² in the third set, and the
upper and lower levers of each set acting in opposite directions as shown upon the
bearing boxes and feed rollers carried thereby, the yielding pressure being afforded
by weights (not shown) depending from the levers 1, f' and ' respectively.
It is, of course, evident that the construction of the feed rollers and connecting
parts may be varied to a considerable extent and that springs may be employed
instead of weights to afford the yielding pressure desired. The arrangement of
these pairs of feeding rollers is such that the pairs 6 and 6 guide the blank or
partly finished article until it has entered and is firmly held by the guide devices
in the head stock of the machine, to be hereinafter described; while the rollers b¹
continue to hold and guide the blank or article until it has entered between the
pair of rollers 62. The guide devices within the head stock of the machine are
shown as consisting of the four guide rollers g, each mounted in an arm pivoted
upon the sleeve g₁ which is tightly held in the bore of the head stock h, and these
rollers are each normally pressed inward by a spring, as shown, and these
rollers gare each provided with a V-groove and so arranged as to hold and centre
the blank or article at points corresponding to the four corners of a square. It is,
of course, evident that springs may be substituted for these spring-actuated rollers
in some constructions, and that other forms of guides may be used to hold the
articles in proper central position.
The tool head jis fitted to rotate upon a suitable tubular bearing formed on
or extending from the head stock h of the machine. This tool head is not shown
in Figures 1 to 7 inclusive as having its bearing directly upon the head stock 1,
but is so shown in Figures 8 and 9. In Figures 1 to 7 a rotating driving pulley
is mounted directly upon the head stock and has a bearing sleeve which intervenes
between the tool head bearing sleeve and the tubular extension of the head stock h.
The tool head is provided with a face plate j', provided with radial grooves within
which are fitted bearing boxes 72, carrying rotating tool shafts 73, and these tool
shafts are also provided with bearings, shown as spherical or universal bearings, in
lugs extending outward from the tool head. The tools are carried upon the tool
shafts and may consist of grinders or polishers j³ (as shown in Figures 1 to 4),
or other forms of finishing tools, or of cutting tools as shown in Figures 8 and 9,
and consisting of the clamps j and the chisels or cutters jo held therein, or other
forms of cutting tools may be used; and these parts are interchangeable, so that a

page_text: machine may be provided with the cutting tools to perform the preliminary operation
of cutting the articles from the blank, and then the cutting tools may be removed
and grinding wheels or tools inserted, and the partly finished blank that has been
subjected to the cutting operation may be again put through the machine to have
its surface ground, and again, a set of polishing tools may be inserted in the
machine and the article again put through the machine and polished and finished ;
or this work may be effected with much greater economy of time by having in the
factory one of my improved machines fitted up as a cutter, another as a grinder,
and another as a polisher, and, of course, if other operations are desirable in finishing
the tools such as varnishing, rotating brushes may form the tools of the machine
to perform this work; or if it is desired to duplicate any of these operations, the
required number of machines may be fitted up. It is evident the number of tool
carrying shafts 3 and tools carried thereby may be one or three or any desired
number instead of two as shown.
In the construction shown in Figs. 1 to 7 inclusive, the tools and tool shafts are
caused to rotate upon their axes by means of pinions mounted upon the toul shafts j³
and gearing with internal teeth formed upon the driving pulley i (see Figure 7).
These pinions are arranged quite close to the universal bearings of the tool
shafts in the lugs of the tool head so that the movement of the tools to and
from the axes of revolution causes comparatively slight movements of the pinions j
and the pinions always mesh with the internal teeth. It is usually desirable to
attain an extremely high rotative speed in the tools, and this may be accomplished
by imparting a proportional speed to the driving pulley i, and it will be noted that
the only parts that will be subjected to this high speed will be the driving pulley i
and the tools and tool shafts.
In the construction shown in Figures 8 and 9, the internal teeth are formed upon
a fixed part of the machine, which is the extension 2 from the head stock h.
This construction permits a high rotative speed to be attained in the tools and is
exceedingly simple, but it is not usually as desirable for very high speeds and heavy
work, as that shown in Figures 1 to 7 inclusive. In the construction shown in
Figures 8 and 9 the tool head is rotated by the driving pulley ", which is formed
upon or secured to the tool head and forms a part thereof, and the rotative speed
of the tools has a fixed relation to the speed at which they are revolved about
the blanks or articles; whereas, in the construction shown in Figures 1 to 7
inclusive, the speed at which the tools are revolved about the article may be
adjusted at pleasure and altogether independently of the speed at which the tools
are rotated upon their axes as they are caused to revolve about the article.
tool head in the construction shown in Figures 1 to 7 inclusive, is rotated by means
of a gear wheel which meshes into gear teeth formed upon the outer periphery of
the face plate; and this gear wheel is mounted upon the main driving shaft k
of the machine.
The
The preferred construction of the means for guiding the tools so as to cause
them to approach toward and recede from the axis of revolution in accordance
with the irregular contour desired to be produced in the article, is shown in
Figures 8 and 9, and consists of a guide 1, fitted to slide longitudinally by means of
rods,, passing through bearings in the head stock h; and the inner periphery
of this guide is peculiarly shaped so as to properly control the movement of the
tools. A suitable rounded projection stud or contact point 1, extends from each
bearing box of the tool shafts and comes in contact with the peculiarly shaped
inner periphery of the guide 1. Springs 13 press these shafts and the contact
point outward, and thus hold the contact points against the inner periphery of
the guide . The rods are joined by a cross piece which is longitudinally
adjustable thereon, and has a projecting stud or point 1, and this stud or point 15
works against the outer periphery of the cam 1, and is held against the same with
a yielding pressure by the springs 4, and this cam 1 is caused to rotate in the
direction indicated by the arrow and is so shaped as to gradually move forward
the cross piece l, rods and guide during an operation slightly less than ohe

page_text: revolution, and at the conclusion of one revolution to return said frame, rods and
guide to their starting position. Thus, one revolution of the cam causes the
guide to gradually move toward the right or front of the machine and thereby
causes different portions of the inner periphery of said guide to come in contact
with the points and control the movements of said points. The guide, cam and
other parts are shown in about middle positions in Figure 8, as they would be
when one-half the length of the blank or article had been subjected to the action
of the tools. Upon a comparison of the shape of the hammer handle, part of which
is shown by the dotted lines æ in Figure 8, and the full length of which is shown
by similar lines in Figure 5, it will be seen that the longitudinal section of the
guide is of a contour corresponding to the longitudinal contour of the hammer
handle, except that it is fore-shortened in length, so that the contact points l', as
the guide is caused to move in contact with them, will guide the tools in corre-
spondence with the longitudinal contour desired to be produced in the handle.
The cross contour at any point may be governed by the shape of the cross section
of the guide at the corresponding point thereof. Where an elliptical cross
contour is desired, the cross section of the guide will have the corresponding
variations of distance from the axis of revolution of the tools that are necessary
to guide the tools and cause them to produce the elliptical coutour of the article;
and where another contour is desired, it is only necessary to properly shape the
internal periphery of the guide at the proper location to produce said contour in
the article. Thus, any desired shape may be imparted to the article, within a very
wide range of variations. It will be noted that as the guiding surface is of very
much larger diameter than the article operated upon, and the variations in radial
dimensions in the cross contour of the article are produced by variations of
corresponding or less magnitude in the guiding surface, these variations in the
radial dimensions of the guiding surface are very much smaller relatively to the
very much larger radius and periphery of the guide, and therefore irregularities in
the cross contour of the article would be produced by a contour of the guiding
surface much more regular than the contour of the article. It is, of course,
evident that variations of the contour of the article may also be produced by
altering the movement of the cam, and thus causing the points 12 to dwell upon
certain portious of the inner periphery of the guide and to move rapidly over
other portions; so that, by changing the form of the cam and changing the
longitudinal and cross contour of the internal surface of the guide l, a very large
number of variations in the contour to be produced may be effected.
In Figures 1 to 7 inclusive, I have shown a form of guide 1', which is well
adapted for use when the article to be produced is to have the same shape of cross
contour whereever it has the same dimensions and where all cross contours are to
be similar figures, as for instance, where the cross contours are to be ellipses having
the same ratio of major axis to minor axis. An inclined surface 18 is formed on the
outer part of each bearing box 12 of the tool shafts, and this works against the
conical inner periphery of the guide l, and the cross section of this inner periphery
of the guide is so shaped as to guide the tools toward and away from the axis of
revolution, so as to produce the desired cross contour (shown as elliptical, see
Figure 6) in the article operated upon, while means are provided for moving the
guide longitudinally, so as to vary the diameter of the cross contour by the
engagement of the inclined faces 18, with the conical inner periphery of the guide .
The guide has secured to it rods which are fitted to slide longitudinally in
guides and are joined at or near their rear ends by the cross piece 10 which
is longitudinally adjustable thereon, and this cross piece 10 has a projection or
point which works against the face of the cam and is held with a yielding
pressure against said cam by the springs 13 on the rods 16, or may be held by other
yielding devices. The cam is of the proper form to cause the desired
longitudinal movements of the guide for the production of the hammer handle
shown by the dotted lines x. Suitable variations in the shape of this cam will
produce other articles in which the variations of the dimension of the cross contour

page_text: are differently arranged and of different degree; while the substitution of another
guide, having an inner periphery of different shape, will result in the production
of cross contours of different shapes.
3
The cam is shown as removably held by bolts upon the hub 15, which hub is
fitted to rotate in the standard 118 extending upward from the bed plate a, and this
cam receives its motion from the cross shaft k fitted in bearings in the lower part
of the bed a, and geared by a worm and worm wheel k², k³, to the main driving
shaft k; a gear at one end of said cross shaft k meshing into an intermediate
gear, which, in its turn, meshes into the gear 4 mounted upon the shaft k7, upon
which shaft the hub of the cam 12 is fitted to rotate freely, so that the canr is
not operated by the rotation of said shaft k³, except when it is coupled to said
shaft; and a suitable clutch mechanism is shown which automatically couples and
uncouples the cam hub 715 and shaft k. This clutch mechanism consists of the
sliding clutch 8, fitted to rotate with the shaft k7, but free to move longitudinally
thereon, and having suitable engaging faces which mesh with counterpart faces on
the hub of the cam 12. An annular groove is formed in the hub of the clutch k³,
in which works a pivoted yoke m¹ mounted upon the shaft m, and this shaft m is
fitted to oscillate in suitable small bearing blocks or lugs extending upward from
or secured to the bed plate a, (and for greater clearness in showing the construction
is with its connecting mechanism partly shown in Figure 5) and has at its front
end an arm m² which works into and is controlled by the vertically sliding finger m³
which is arranged just in front of the tools and is normally pressed upward by the
spring m and slides in bearings in the bed plate a and in the standard m³. This
finger m³ is so interposed in the path of the blank or article that is fed forward by
the feed rollers b, b, that said blank or article depresses said finger m³ just before
it enters under the action of the tools, and this depression of the finger m³,
acting through the arm m², causes the shaft m to oscillate, and, through the yoke m¹,
throws the clutch into engagement with the hub 11 and thus starts the rotation
of the cam 12. The finger m³ is maintained in its depressed position and the cam
is thus coupled with its shaft until the end of the blank or article has passed by the
finger m³, at which point, of course, the cycle of operations upon this article will
have been nearly or quite completed. As soon as the blank or article has passed
beyond the finger m³, it is pushed upward by its spring m and the cam 2 is thus
uncoupled from its shaft and brought to rest, and the mechanism is so arranged
that the movement of the cam will cease at the completion of one revolution
thereof. The cam remains at rest until another blank or article is fed forward.
into position to depress the finger m³. The relationship of the movement of the
feeding mechanism and of the shaft is such that during the feeding forward of
one of the blanks or articles, the shaft will as aforesaid perform one revolution,
and after the conclusion of the cycle, and at the point where the cam 12 is uncoupled
with its shaft and brought to a standstill, it will have performed one full revolution
and will therefore be in the position from which it started at the beginning of said
cycle of operations. Thus the machine automatically repeats the same cycle of
operations upon each blank or article that is fed through it. It is of course evident
that this arrangement may be varied in accordance with the shape of the article,
and means are provided for varying the relative speeds of the shaft and shaft A',
such means consisting of the intermediate gear above referred to which is
held at a fixed distance from the gear and its shaft by the pivoted
arm, while its distance from the shaft is adjustable by means of the
slotted arm to provide for gears of different dimensions upon said shaft kl.
The driving mechanism for the feeding rollers is shown as comprising two
sprocket chains n and n', both of which pass over the double sprocket wheel,
which is connected to said cross shaft k by a gear n³ meshing with the gear n
secured upon the cross shaft ; and these sprocket chains n and n' alternately
operate the upper and lower rollers of the sets of feeding rollers, in the manner
clearly indicated in Figure 1; that is to say, the chain actuates the lower feed
roller 6, the upper feed roller and the lower feed roller b and then passes over

page_text: the double idler sprocket wheel nº and back again to the double sprocket n², while
the chain n' actuates the upper feed roller b², the lower feed roller band the upper
feed roller b, and also passes over the idler sprocket n and back again to the
double sprocket n². It is, of course, evident that other driving mechanism may be
substituted in place of that shown herein, although the mechanism shown is well
adapted for the machine.
The main driving shaft k receives its motion from the driving pulley k" and by
the arrangement of driving mechanism shown in Figures 1 to 7 inclusive, the two
driving pulleys and i have parallel axes, and may be driven from a single shaft.
ór counter-shaft, without twisting the belts. The driving pulley i causes the
rotation of the tools upon their axes as they are revolved about the article by the
mechanism operated by the driving pulley ", while the other movements of
the machine--that of feeding the blank or article and actuating the guide 17-are
performed by mechanism connected to and actuated by the guide pulley k". In
the modified construction shown in Figures 8 and 9, the driving pulley
both the revolution of the tools about the blank or article, and the rotation of the
tools upon their axes, while of course other mechanisms, substantially the same as
that shown in the other figures, would be employed to feed the article and to
actuate the cam 1 and thus move the guide l.
causes
It is of course evident that parts of my invention may be used separately or in
connection with other parts of different construction, and that various modifications
may be made in the construction without departing from my invention. I do not
therefore limit my invention to the specific construction and arrangement above
shown and described.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. In a lathe for irregular shapes, the combination with a tool, of means for
revolving said tool in an orbit parallel to the desired cross contour of the article
and varying the shape of said orbit as the tool operates at different points along
the length of said article, substantially as set forth.
2. In a lathe for irregular shapes, the combination with a tool and means for
rotating said tool upon its axis, of means for revolving said tool in an orbit
parallel to the desired cross contour of the article to be produced and for varying
the orbit of motion of the rotating tool in accordance with the desired contour of
the article as the tool operates at different points along the length of said article,
substantially as set forth.
3. In a lathe for irregular shapes, the combination with a tool, of means for
revolving said tool about the article, and a peripherally varying guide controlling
the orbit of movement of said tool, said guide being of different shape at different
portions of its length, and means for causing relative longitudinal movements
of said guide, substantially as set forth.
4. In a lathe for irregular shapes, the combination with a tool and means for
rotating the same upon its axis, of means for revolving said tool about the article,
and a peripherally varying guide controlling the orbit of movement of said tool,
said guide being of different shape and different dimensions at different portions of
its length, and means for causing relative longitudinal movements of said guide,
substantially as set forth.
5. In a lathe for irregular shapes, the combination with a rotating tool head and
one or more tools carried thereby and mechanism for feeding the blank or article
through said tool head, of means for rotating said tools upon their axes as they
are caused to revolve about the article, and a guide controlling the movement of
said tools in accordance with the desired irregular contour of the article, substan-
tially as set forth.
6. In a lathe for irregular shapes, the combination with a rotating tool head
and one or more tool'shafts fitted to rotate therein and one or more tools carried

page_text: thereby, the bearings of said shafts being so constructed as to permit the tools to
approach to and recede from the axis of revolution, and mechanism for feeding
the blank or article through said tool head, and gears upon said tool shafts and a
driving gear with which said gears of the tool shafts are heid in engagement in
their revolution about the article, and means for rotating said driving gear inde-
pendently of the rotation of the tool head, and a guide controlling the movement
of said tools and means for operating said guide so that it will actuate the tools in
accordance with the desired irregular contour of the article, substantially as set forth.
7. In a lathe for irregular shapes, the combination with a rotating tool head and
one or more tool shafts carried thereby, and tools upon said shafts and means for
rotating said tool shafts, and mechanism for feeding the blank or article through said
tool head, of a guide having its contour varied in accordance with the contour desired
in the article, and one or more contact devices connected to said tools, and means
for moving said guide so as to bring said contact devices into contact with different
portions of said guide according to the desired contour of the article, substantially
as set forth,
8. In a lathe for irregular shapes, the combination of a rotating tool head, one
or more tool shafts held at one end in a bearing having a fixed position on said
tool head and at the other end by a bearing fitted to slide in said tool head and one
or more tools carried by said tool shafts, said bearings permitting said tools to move
toward and from the axis of revolution, means for rotating said tool shafts and
tools upon their axes, and a guide controlling the movement of the tools and tool
shafts to and from the axis of revolution in accordance with the desired irregular
contour of the article, substantiaily as set forth.
9. In a lathe for irregular shapes, the combination of a rotating tool head, one
or more tool shafts held in bearings thereon, and one or more tools carried thereon,
said tool shaft bearings being so constructed as to permit the tools to move toward.
and from the axis of revolution, means for rotating said tool shafts independently of
the rotation of the tool head, and a guide controlling the movement of said tools
and tool shafts to and from the axis of revolution, and having its contour varied in
accordance with the contour desired in the article, and means for moving said guide
so as to bring different portions of its surface into operation upon said tools in
accordance with the desired irregular contour of the article, and means for feeding
the article under the action of said tools, substantially as set forth.
10. In a lathe for irregular shapes, the combination with a rotating tool head
and one or more tools carried thereby, and a non-rotary head stock carrying said
tool head and having a tubular opening therethrough, of spring guides held in said
head stock and adapted to centre and guide the article as it passes through the
bore of the head stock, and a suitable feeding mechanism adapted to co-operate
with said spring guides in feeding the article under the action of said tools,
substantially as set forth.
11. In a lathe for irregular shapes, the combination with a rotating tool head and
one or more tools carried thereby, and a non-rotary head stock carrying said tool
head and having a tubular opening therethrough, of spring guides held in said head
stock and adapted to centre and guide the article as it passes through the bore of
the head stock, and the sets of feed rollers b, b' and b, both of said sets of feed
rollers band being adapted to guide the article under the action of the tools until
the article is guided at one end by said spring guides, and the set of feed rollers 61
continuing to guide said article until the article enters the feed rollers b², whereby
the article is at all times guided at two points along its length when under the action
of the tools, substantially as set forth.
12. In a lathe for irregular shapes, the combination with a rotating tool head and
one or more tools carried thereby, and a guide controlling the movement to and
from the axis of revolution of said tools, and actuating mechanism for said guide,
of feeding mechanism for the blank or article, and means operated by said blank or
article for starting and stopping said guide actuating mechanism, substantially as
set forth.

page_text: 13. In a lathe for irregular shapes, the combination with a rotating tool head and
one or more tools carried thereby, and a movable guide controlling the movement
to and from the axis of revolution of said tools, and actuating mechanism for said
guide, of means for feeding a blank or article under the operation of said tools, and
a yielding finger interposed in the path of said blank or article, and a mechanism
actuated by said finger for stopping and starting the guide actuating mechanism,
substantially as set forth.
14. In a lathe for irregular shapes, the combination with a rotating tool head and
one or more tools carried thereby, and a movable guide controlling the movement
of said tools to and from the axis of revolution in accordance with the desired
irregular shape of the article, of means for feeding a blank or article under the
operation of said tools, and a yielding finger interposed in the path of said blank or
article, an oscillating shaft connected to or engaging with said finger and a ciutch
mechanism connected to or engaging with said oscillating shaft, and a driving
shaft and mechanism operating said guide for the tools, between which driving
shaft and guide operating mechanism the said clutch is interposed, substantially as
set forth.
15. In combination, a rotating tool head and one or more tools carried thereby, a
movable guide controlling the movement of said tools to and from the axis of
revolution in accordance with the desired shape of the article, means for feeding
the blank or article under the operation of said tools, the yielding finger m³ inter-
posed in the path of said blank or article, the shaft m and arm m² engaging with
said finger m³, the yoke m' on said shaft m, a driving shaft, a cam mounted so as to
rotate independently of said driving shaft, a clutch adapted to connect said shaft
and cam and engaged by said yoke m', and a contact device bearing against said
cam and connected to said guide, substantially as set forth.
16. In combination, a head stock having a tubular bore, a driving pulley
fitted to rotate thereon, and having an internal gearing surface formed thereon, a
tool head fitted to rotate around said head stock and one or more tool shafts and
tools carried thereby, said tool shafts being provided with pinions meshing into said
internal gearing surface of the driving pulley, the bearings for said tool shafts being
constructed so as to permit said tools to rotate upon their axes and to move toward
and from the axis of revolution, and said tool head having a face plate provided
with a gearing surface, a gear meshing into said gearing surface of the face plate
and means for actuating said gear, and means for controlling the movement toward
and from the axis of revolution of said tools, substantially as set forth.
17. In combination, the head stock having a tubular bore, the driving pulley?
fitted to rotate thereon and having an internal gearing surface, the tool head j
having a face plate j¹ and fitted to rotate upon the sleeve of said driving pulley i,
one or more tool shafts j³ fitted to rotate on their axes in said tool head and held
at or near one end by a bearing having a fixed position but permitting angular
movement of the shaft and at or near the other end by a bearing fitted to slide in a
slot in the face plate j¹ of said tool head, pinions on said tool shafts meshing with
said internal gearing surface of the pulley i, a gear meshing into a gearing surface
formed upon the face plate and means for actuating said gear, a movable guide
surrounding said tool shafts and a contact point for each of said tool shafts
working against the face of said guide, and means for actuating said guide, and
a feeding mechanism for the blank or article, the actuating mechanism of which is
connected to said guide actuating and gear actuating mechanisms, substantially as
set forth.
Dated this 13th day of August 1895.
PHILIP M. JUSTICE,
Chartered Patent Agent, London,
For the Applicant.