Year: 1890

page_text: Date of Application, 30th Dec., 1890-Accepted, 7th Mar., 1891
Fig. 4 is a plan view partly broken away, of the upper part of the machine
showing only the driving and counter-balancing mechanism, and omitting the guiding
and cutting mechanism.
Figs. 5 to 11 inclusive are detail views illustrating pivot joints of the machine.
Figs. 12, 13 and 14, are detail views illustrating the guiding and cutting tools,
and their connections.
Figs. 15, 16 and 17 are details showing the construction of the operating
table, and
Figs. 18, 19 and 20 are similar views showing a modified construction for
special work.
A A represent the vertical timbers of the supporting frame of our machine,
and B B the longitudinal horizontal timbers, while C C, D D' D and E E are
the main transverse horizontal timbers, in addition to which this supporting frame
is thoroughly braced as shown by the crossed pieces a a, b b and c c, and others not
lettered, as strength and steadiness are essential.
To the underside of the projecting front ends of the upper longitudinal timbers B B
is secured the cross timber D', and to the underside of this timber are fastened
brackets d d in the lower arms of which are the screws having conical bearing
points which fit into corresponding countersinks in the ends of the wall-rod F, and
thereby support the same as clearly shown in the detail view Fig. 10.
This wall-rod F is preferably a hollow brass pipe having its ends closed by
brass plugs soldered therein, and the described countersinks made in said plugs.
Clips ee are rigidly attached to this wall-rod F (as by saw-cutting through the
upper ends of said clips and drawing the two edges together by a clamping screw/
or by soldering, or by both) and the lower ends of these clips are bifurcated and
carry bearing-screws e el (preferably like the screws d' just described) which find
corresponding countersunk bearings in the opposite sides of a small brass casting e²,
whose lower part is hollow to receive one end of a rod G, secured therein in any
suitable manner, as by a saw-cut through a boss on the lower end of the casting
and clamping screw f¹, as shown in detail in Fig. 10 and the detail view Fig. 11
(taken on the line 11-11 of Fig. 10) or by soldering or both. There being two
clips e, there are of course two rods G which we term side-rods, and which are best
shown in Fig. 2, and which are jointed to two other side-rods G' G¹ and a double
central cross-rod H H, the connection being shown in detail in Figs. 7, 8, and 9 as
follows: the lower ends of side-rods G G are each fitted to castings y (in similar

page_text: h
manner to their union with castings e, as by soldering, or saw-cut and clamping
screws, or both) and the free ends of these castings g each carry a double
pointed pin rigid therein, while the upper ends of the side-rods G¹ G¹ are each
provided with a peculiar casting the upper ends of which castings are bifurcated
and split, and provided with interior countersinks so as to enable these ends to be
sprung over the conical points of the double pins. h, and with exterior counter-
sinks in line with the interior ones, to receive the conical points of the screws i i
of the end pieces I and I of the double central cross rod H H, the said upper
split portions of said castings being further held together by the clamping
screws, while the lower ends of said castings, which receive the side rods G', may
be saw cut and clamped by the screws f* or soldered to the said side rods, or both,
and each pipe H of the double central cross rod H H is similarly united to the
adjacent ends of the end pieces I and I', as indicated at f³.
In all of the detail views where the conical pointed bearing screws are shown.
we have also shown jam nuts (not lettered) which are necessary to keep the screws
from turning. The lower ends of the side rods G¹ G are connected as hereinafter
described to the tool rod J, and the parts thus described, consisting of the wall
rod F, side rods G G, central double cross rod H H, side rods G¹ G¹, tool rod J,
and their jointed connections, constitute a parallel motion, which we term our
"vertical parallel motion," and we have also a horizontal parallel motion, con-
sisting of the wall rod K (which is connected by brackets kk to the face of cross
timber D) side rods L L, double central cross rods M, side rods L'L', and the said
tool rod J, and the two described parallel motions are precisely alike in construction
and arrangement, with the exception of the manner in which the said two motions
are connected to the common tool rod, which will now be described. This
connection is best illustrated in the detail views Figs. 5 and 6. The tool rod J
is preferably a pipe, which carries near each end, a casting N each having
upward extending lugs and horizontally extending lugs 11, the former to
receive the swivel piece O, and the latter to receive the right angled casting m,
whose free horizontal arm receives one of the side rods L' of the horizontal
parallel motion rigidly secured therein, as by saw cut and clamping screw 6,
or solder, or both, as previously described, the said casting m having countersinks
in each end of its vertical arm which receive the conical points of the bearing
screws passing through the described lugs 1 1. The entire lower part of the
main body of the casting N is saw cut to enable it to be firmly clasped to the
tool rod by clamping screws 17. The swivel piece O is practically U-shaped
in transverse section, and in each end of the lower central part is a countersink to
receive the conical points of the bearing screws j' which pass through the described
upward extending lugs of the casting M, while at right angles to these
screws j', are other bearing screws n n, which pass through the upper side portions
of the swivel piece O, the conical points of these screws n projecting into counter-
sinks on opposite sides of the lower end of the casting p, whose upper end receives
the lower end of one of the side rods G of the vertical parallel motion, which rod
is secured therein by saw cut and clamping screw for solder, or both, as previously
described.
The effect of the horizontal parallel motion is to compel the tool rod J to be at
all times parallel to the lower wall rod K, and the effect of the vertical parallel
motion is similarly to compel the said tool rod J to be at all times parallel to
the upper wall rod F, and consequently the effect of the two combined parallel
motions is to compel the said tool rod J to be always parallel to both the wall
rods K and F, while the effect of the swivel connection OO between the tool rod J
and the vertical parallel motion is to permit the plane of the vertical motion to
assume any angle to the plane of the horizontal motion, thereby allowing perfect
freedom in the movement of the tool rod.
We will next describe the guiding and cutting tools and their connections. From
the tool rod J there depend two braced brackets P P whose upper ends are rigidly
attached to said rod, while their lower ends carry conical pointed bearing screws qg,

page_text: which take into corresponding countersinks in the adjacent ends of a yoke Q, and
thereby support it. This yoke consists of two or more transverse ovals united by a
rigid rod, as shown in Fig. 12, and each oval carries a tool holder ?' supported
therein by means of conical pointed bearing screws whose points enter counter-
sinks in the ends of said tool holders; one of these tool holders carries the shank or
hand piece R of the cutting tool R¹ while the other carries the shank or hand piece S
of the guiding tool S', and the said tool holders also support upwardly projecting
arms R2 and S² bifurcated at their upper ends and there receiving a cross rod T
supported by means of conical pointed bearing screws ss, passing through the said
upper ends of the arms R2 S2 and into countersinks in the cross rod T, whereby the
guiding and cutting tools are free to swing in any desired direction but compelled
to always move exactly alike and parallel to each other.
The term tool carriage will be hereinafter employed to designate that part of the
apparatus which is covered and controlled in its movements by the parallel motions
and which in turn carries the tool holders. As represented in the drawings, this
tool holder consists of the connecting rod J by which the two parallel motions are
coupled together, and the needful attachments for supporting the tool holders and
tools and permitting their movements, but the form and construction of the carriage
may be considerably varied without departing from our invention, as for instance
so constructing the tool rod J as to make it answer the purpose it serves in our
machine, as herein illustrated by drawings, and also carry the tools themselves, but
we much prefer the use of brackets and yoke connected thereto, as we have
shown them.
The drawing and counterbalancing mechanism will now be described. Between
the rear transverse timbers C and C₁ of the supporting frame are located two
rokes U and V, which are of generally oblong shape with upper and lower bosses
provided with countersinks to receive the conical pointed ends of bearing screws uu
and, respectively, which screws pass through the described timbers. The yoke V
is provided with conical-pointed bearing screws passing through the upright
sides of said yoke, and into countersinks in the end of a cross bar t, which forms an
integral part of the long bent balancing rod T", whose projecting rear end carries a
weight t', and to whose front end is attached one end of a cord 2, whose other end is
attached to the tool rod J. at the front of the machine, so that the weight t' will
serve to counterbalance the weight of the two parallel motions, and the tool-rod J
and attachments. The other yoke U has side bosses which are perforated to receive
a shaft w and which are themselves received within bearings in the bifurcated rear
end extensions w² of another rod W, which latter is made in two sections in front of
the bifurcated portion, joined by a sleeve W₁ so as to be adjustable in length, and
secured in said adjustment by set screws w¹ w'. The front portion of this rod is
tubular and loosely receives the rear end or shank of a shaft bearing W2, whose
front end receives a flexible shaft X, whose lower end connects with the cutting
tool R in similar fashion to the flexible shafts of dental engines, while the upper
end of said shaft is connected to a pulley a from which an endless belt X' extends
to and around a large pulley X on the shaft w, which shaft also bears a smaller
pulley, from whence leads a belt ² to a source of power not shown. The project-
ing rear ends of the extensions w² of the bifurcated rod W are each provided with a
weight to counterbalance the forward projecting end of the rod W and the
flexible shaft X.
It is necessary however, that the driving mechanism be more or less flexible, and a
directly connected single belt such as has been heretofore commonly used in carving
machines cannot be employed in our machine, since any movement of the driven
cutting tool towards the driving pulley would slacken the belt and diminish or
check the motion of the tool.
We adopt the device of the flexible shaft shown and described herein in lieu of
a single belt or other power transmitter which does not permit the free movement
of the cutting tool from back to front and side to side of the work table without
interfering with the motion of the cutting tool.

page_text: The necessary speed of rotation imparted to this tool is very great and though it
depends upon and varies with the material worked and size of tool employed, we
have found that ordinary woods are best treated with tools not larger than a quarter
to five-sixteenths of an inch, (and in finishing much smaller tools are used) and
running at a speed. of from ten to fifteen thousand revolutions per minute. To
maintain this high speed it is desirable to have the most effective means of trans-
mission possible and in order to make the machine delicate in movement the
travelling parts must be light, as otherwise the momentum of these parts in their
movement would interfere with fine work.
It will of course be understood also that any suitably constructed framework may
be employed to support and carry the operative mechanism of our machine and the
words "timber" and "timbers," &c., occurring in the specification are intended to
include any corresponding or equivalent parts of a frame of metal or other material
that may be adopted.
Y is the operating table, the preferred form of which is shown in detail in Fig. 15,
and which is cut out to receive two circular plates y y flush with the top thereof,
and having downwardly extending hubs y y', slots y2 y2 and holes for central
removable screw points y³. The table is supported on the front projecting por-
tions of the longitudinal liorizontal timbers B B and bolted to the under sides of
said timbers is a transverse timber B2, to which are attached the boxes of the
vertical spindles Z Z, and the lug carrying a downward projecting stud 63 which
supports an intermediate gear Z meshing with the gears 727 which are fast upon
the vertical spindles Z Z which latter are stepped in a base plate, and to whose
upper portions the hubs y of the plates y are also secured, while the removable
screw points y³ are fastened in the tops of these spindles. Thus any movement of
one spindle will produce a corresponding movement in the other and the two
attached plates y y will always move together equally.
We will next proceed to describe the operation of our machine.
As already
described the guiding tool and cutting tool are so connected that any movement of
one will be faithfully duplicated by the other, the said movement being wholly
unrestricted in direction, and limited only in extent. The preferred cutting-tool R
is a sphere pierced by a cylindrical hole of diameter smaller than the sphere, tangent
to the sphere at one point, and two of the edges of the hole thus formed being made
cutting edges, and the rest of the spherical surface cut away to form a clearance,
while the guiding tool is necessarily of the same outline as the cutting tool, before
the hole and cutting edges are formed in the latter.
For carving objects in high relief, groups of statuary, figures, etc., we place the
model or pattern upon the plate y under the guiding tool, and fasten the screw
point firmly into the top of the corresponding vertical spindle Z and into the base
of said model, as clearly indicated at the right in Fig. 15, and if necessary additional
screws may be inserted from below the plate through the slots 2 therein, into the
base of said model or pattern, and then upon the other plate y, below the cutting
tool the block to be carved is similarly secured (said block being preferably roughly
cut into the general outlines of the model, so as to remove wholly superfluous
material) and then the guiding tool is held by the operator and passed over the
model so as to bring it into contact with every portion of the surface thereof, the
cutting tool making the same motions simultaneously, and as the latter is revolved
at the necessary speed (according to the material being carved) by means of the
power transmitted through the belt X, flexible shaft X and attachments, the said
tool will cut out the block into the exact configuration of the model. When the
surface nearest the operator is entirely carved, he has only to grasp one of the gear
wheels Z and give it a slight movement to bring a fresh surface of both model and
block before him, and thus he can always work to the greatest advantage with the
part of the model to be copied and block to be carved, directly in front of him.
When a panel, bas-relief, or other flat object is to be carved, the model and block
are simply fastened in place on the table Y and carved as before, except
that in such instances the said model and block do not have to be rotated.
In case

page_text: 3
a very long object is to be carved, we find it expedient to remove the screw points y³
and employ an auxiliary table (merely a flat board) placed on top of the table Y,
and with the model and block secured to said auxiliary table, so that the design can
be copied in sections within the limits of movement of the tool-rod and attachments,
and in order to ensure the perfectly straight movement of the auxiliary table when
it is to be noved to bring a fresh section into place, we prefer to employ an ordinary
adjustable gange of any suitable construction, as shown at Y¹ in Figs. 2 and 3,
to make a straight edged guide for said auxiliary table.
When operating on long pieces whose periphery is to be carved, as for example,
furniture legs, stair-posts, canes, umbrella handles, and the like, a modification in the
arrangement of the operating table is necessary, and illustrated in Figs. 18, 19
and 20; this change is practically merely substituting a vertical position of the parts
for their former horizontal position, and vice versa, the gear wheels Z2 Z2 and
intermediate gear 7 and plates y being vertically arranged; while the spindles Z
and shaft (which takes the place of stud 63) are now horizontal.
When the model and piece to be carved are of moderate length no further
support than that offered by the screw points y³ and screws through the slots in the
plates y is necessary, but if the said mode and block are unusually long and heavy,
it becomes essential to provide a support for their opposite ends, as indicated in
Figs. 18 and 20 and to this purpose (and to further provide for varying lengths of
the articles to be carved) the upper surface of the table Y2 (which takes the place
of table and rests on the longitudinal timbers B B') is provided with two
longitudinal 1-slots which receive tongues 6 depending from the bases of the
boxes, and similar tongues depending from the bases of the foot stocks" which
carry the centres so that the said foot stocks may be moved within the said slots
to any point to or from the plates y necessary on account of the length of the model
and block, and then fastened at the desired point by tightening the T-bolt 68, as
shown best in detail view Fig. 20, while by reason of the described slots y', the
centres and will always be kept in line. For greater convenience in operating
the gears to turn the model and block the shaft 3 of the intermediate gear Z
is extended to beneath the front of the table Y, and there supported in suitable
bearings and provided with a hand wheel 10.
In order to accommodate the table Y to work which is so long as to require to
be done in sections the said table may be grooved as at 5 Fig. 19, on the under
side so as to rest upon suitable tracks B3 secured to the upper surfaces of the
timbers B', and thus the table may be moved back and forth, after the fashion of
the auxiliary table hereinbefore described for accomplishing a like purpose with
flat work, the described grooves and tracks serving the purpose of the gauge Y¹ in.
section work.
While we have described our two parallel motions as "vertical" and "horizontal"
respectively, this was merely for convenience, and we wish it understood that our
said combined two motions may be suspended at any variation to a right angle
found convenient in any given instance, or that either motion may be suspended at
any desired inclination.
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondents, and in what manner
the same is to be performed, I declare that what I claim is :-
1. The combination in a carving machine of a pattern, aside from the block to
be cut, a movable cutting tool, a guiding tool, so connected therewith that its
movement over said pattern will produce a similar simultaneous movement of said
cutting tool, and a flexible shaft connecting said cutting tool with a source of power,
substantially as and for the purposes set forth.
2. The combination in a carving machine with a suitable frame, of connected
movable hand pieces or tool holders, guiding mechanism connecting said tool
holders with said frame and with each other so that the movement of one will
produce a similar and simultaneous movement of the other, a guiding tool and a

page_text: cutting tool carried by said holders, and a flexible shaft connecting said cutting
tool with a source of power, substantially as and for the purposes set forth.
3. In a carving machine the combination of a suitable supporting frame, two
parallel motions supported thereby, a rod connecting said parallel motions with each
other at an angle; a guiding tool and a cutting tool controlled in travel by the
parallel motions and mechanism for imparting motion to the cutting tool, sub-
stantially as set forth.
4. The combination in a carving machine of a suitable frame, freely movable
hand pieces or tool holders so constructed and connected as to cause them to
describe similar simultaneous movements, a removable guiding and a removable
cutting tool carried by said tool holders, and a flexible shaft connecting said
cutting tool with a source of power, substantially as and for the purposes set
forth.
5. In a carving machine the combination with a suitable supporting frame, of a
tool carriage, a parallel motion connected with the frame and tool carriage and
movable directly backward and forward, a second parallel motion independently
connected with the frame and also connected with the tool carriage, and capable of
movement vertically and backward and forward, and a guiding tool and a cutting
tool connected with each other so that the movement of the guiding tool over a
pattern shall produce similar movements of the cutting tool, substantially as and
for the purposes set forth.
6. In a carving machine the combination with a suitable frame of a tool carriage,
a parallel motion connected therewith, a guiding tool and a cutting tool connected
with said carriage, and a flexible shaft connecting the cutting tool and a proper
source of power, substantially as and for the purposes set forth.
7. In a carving machine the combination with a suitable supporting frame, of a
tool carriage, two parallel motions connected with and governing the movements of
said tool carriage in intersecting planes, a guiding tool and a cutting tool connected
with said tool carriage, and a flexible shaft connecting the cutting tool with a
proper source of power, substantially as and for the purposes set forth.
8. In a carving machine the combination with a suitable supporting frame, of a
tool carriage, a parallel motion connected therewith and to constructed as to permit
the free movement of said tool carriage while the latter is kept constantly parallel
to a fixed line, a guiding tool and a cutting tool connected with each other and with
the tool carriage by a jointed connection permitting the simultaneous movement of
the same and permitting the inclination of the cutting tool at a varying angle to the
tool carriage, and mechanism for imparting motion to the cutting tool, substantially
as and for the purposes set forth.
9. In a carving machine the combination with a suitable supporting frame, of a
tool carriage, a parallel motion connected therewith and so constructed as to permit
the free movement of said tool carriage while the latter is kept constantly parallel
with a fixed line, a guiding and cutting tool connected with each other and with the
tool carriage by a universally jointed connection permitting the simultaneous
movement of the same and the inclination of the cutting tool at any angle to the
tool carriage, and mechanism for imparting motion to the cutting tool, substantially
as and for the purposes set forth.
10. In a carving machine, the combination with a suitable supporting frame, of a
tool carriage, two parallel motions connected therewith and governing the move-
ment thereof in intersecting planes, a guiding tool and a cutting tool connected
with each other so that the movement of the guiding tool over a pattern shall
produce similar movements in the cutting tool, said tools being adjustably con-
nected with the tool carriage in such a manner that the cutting tool can be inclined
to the work and to the tool carriage, and mechanism for imparting motion to
the cutting tool, substantially as and for the purposes set forth.
11. In a carving machine the combination with a suitable supporting frame, of a
tool carriage, two parallel motions connected therewith and governing its movement
in intersecting planes, and a guiding tool and a cutting tool connected with each

page_text: other so that the movement of the guiding tool over a pattern shall produce similar
movements in the cutting tool, said tools being attached by a universal joint
connection to the tool carriage, substantially as and for the purposes set forth.
12. In a carving machine, the combination with a suitable frame, of a tool
carriage, a parallel motion connected therewith, a guiding tool and a cutting tool
pivotally connected with the tool carriage, a connection from one tool to the other,
and a flexible power transmitter connecting the cutting tool with a source of power,
said parts being arranged substantially as set forth, whereby the movement of the
guiding tool over a pattern is caused to produce like movements of the cutting
tool, and said cutting tool is rendered capable of inclination, substantially as and
for the purposes set forth.
13. In a carving machine the combination with a suitable frame, of a tool
carriage, a parallel motion connected therewith, a guiding tool and a cutting tool
connected with the tool carriage by a universal joint connection and connected with
each other so that the movement of the guiding tool over a pattern shall produce
similar movements in the cutting tool and a flexible power transmitter connecting
the cutting tool with a suitable source of power, substantially as and for the
purposes set forth.
14. In a carving machine the combination with a suitable frame, of a tool
carriage, two parallel motions connected therewith, a guiding tool and a cutting
tool pivotally connected with the tool carriage, a connection from one tool to the
other, and a flexible power transmitter connecting the cutting tool with a source of
power, said parts being arranged substantially as set forth, whereby the movement
of the guiding tool over a pattern is caused to produce like movements of the
cutting tool, and said cutting tool is rendered capable of inclination, substantially
as and for the purposes set forth.
15. In a carving machine the combination with a suitable supporting frame, of
a tool carriage, two parallel motions connected therewith and governing the move-
ments of said tool carriage in intersecting planes, and a guiding and a cutting tool
connected with the tool carriage by a universal joint connection and connected with
each other so that the movement of the guiding tool over a pattern shall produce
similar movements in the cutting tool, said cutting tool being capable of inclination
at any angle to the tool carriage or work, and a flexible power transmitter con-
necting the cutting tool with a suitable source of power, substantially as and for
the purposes set forth.
16. In a carving machine the combination with a suitable frame, of a pattern, a
movable cutting tool, a guiding tool so connected therewith that its movement
over said pattern will produce a similar simultaneous movement of said cutting
tool, a flexible shaft connecting said cutting tool with a source of power and a
sliding work support or table, substantially as and for the purposes set forth.
17. In a carving machine the combination with a suitable supporting frame, of
a tool carriage, a parallel motion connected therewith and so constructed as to permit
the free movement of said tool carriage while keeping it constantly parallel with a
fixed line, a guiding and a cutting tool so connected with the tool carriage as to
cause the movement of the guiding tool over the pattern to produce similar
simultaneous movements of the cutting tool, a flexible shaft connecting the cutting
tool with a source of power and a sliding work support or table, substantially as
and for the purposes set forth.
18. In a carving machine the combination with a suitable supporting frame, of a
tool carriage, two parallel motions connected therewith and governing its movements
in intersecting planes, a guiding tool and a cutting tool connected with each other
so that the movement of the guiding tool over a pattern will produce similar movc-
ments of the cutting tool, a flexible shaft connecting the cutting tool with a
source of power, and a sliding work support or table, substantially as and for
the purposes set forth.
19. In a carving machine the combination with a suitable frame, of a tool carriage,
a parallel motion connecting the same with said frame, connected guiding and

page_text: cutting tools having a jointed connection with the tool carriage permitting their
simultaneous movement and the inclination of the cutting tool to said carriage,
mechanism for imparting motion to the cutting tool and a sliding work support or
table, substantially as and for the purposes set forth.
20. In a carving machine the combination with a supporting frame, of a tool
carriage, a parallel motion connecting the same with said frame, connected guiding
and cutting tools having a universal joint connection with said tool carriage, and a
sliding work support or table, substantially as and for the purposes set forth.
21. In a carving machine the combination with a suitable supporting frame, of
a tool carriage, a parallel motion connecting the same with said frame, connected
guiding and cutting tools having a jointed connection with the tool carriage per-
mitting their inclination thereto, a flexible power transmitter connecting said
cutting tool with a source of power, and a sliding work support or table, substantially
as and for the purposes set forth.
22. In a carving machine the combination with a supporting frame, of a tool
carriage, a parallel motion connecting the same with said frame, connected guiding
and cutting tools having a universal joint connection with said carriage, a flexible
power transmitter connecting said cutting tool with a source of power, and a sliding
work support, substantially as and for the purposes set forth.
23. In a carving machine the combination with a pattern, of a movable cutting
tool, a guiding tool freely movable over said pattern and producing a similar
simultaneous movement of said cutting tool, an arm or frame having a jointed
connection with a suitable support so as to move in conformity with the movement
of said cutting tool and a flexible shaft supported by said arm or frame and
connected with said cutting tool, substantially as and for the purposes set forth.
24. In a carving machine the combination with a supporting frame, of a movable
tool holder having a jointed connection with said frame, a cutting tool carried by
said tool holder, a pattern tracing tool so connected with said tool holder as to
cause its movement over the pattern to produce a similar simultaneous movement
of the cutting tool, a flexible power transmitter connected with said cutting tool,
an oscillatory frame or arm carrying a driving pulley and at or near its free
: end said flexible power transmitter, substantially as and for the purposes set
- forth.
९
25. In a carving machine the combination with a supporting frame, of a movable
tool holder having a jointed connection with said frame, a cutting tool carried by
said tool holder, a pattern tracing tool so connected with said tool holder as to
cause its movement over the pattern to produce a similar simultaneous movement
of the cutting tool, a flexible power transmitter connected with said cutting tool,
an oscillatory frame or yoke carrying a driving wheel, and an extensible vibratory
arm connected therewith and carrying said flexible power transmitter in conformity
with the movement of said tool holder, substantially as and for the purposes set
forth.
26. In a carving machine the combination with a supporting frame, of a movable
tool holder having a jointed connection with said frame, a cutting tool carried by
said holder, a pattern-tracing tool so connected with said tool holder as to cause its
movement over the pattern to produce a similar simultaneous movement of the
cutting tool, a flexible shaft connected with said cutting tool, a vibratory arm
carrying said flexible shaft in conformity with the movement of said tool
holder, and a sliding work support or table, substantially as and for the purposes
set forth.
27. In a carving machine the combination with a supporting frame, of a tool
carriage, a parallel motion connecting the same with said frame, connected guiding
and cutting tools having a jointed connection with said carriage permitting their
inclination thereto, a flexible shaft connected with the cutting tool, and a vibratory
arm carrying said flexible shaft in conformity with the movement of said tool holder,
substantially as and for the purposes set forth.
28. In a carving machine, the combination with a suitable frame, of a tool

page_text: carriage, a parallel motion connecting the same with said frame, connected guiding
and cutting tools having a universal joint connection with said carriage, a flexible
shaft connected with the cutting tool, and a vibratory arm carrying said flexible
shaft in conformity with the movement of the tool carriage, substantially as and
for the purposes set forth.
29. In a carving machine the combination with a suitable frame, of a tool carriage,
two parallel motions connecting the same with said frame, connected guiding and
cutting tools having a jointed connection with said tool carriage permitting their
inclination thereto, a flexible shaft connected with the cutting tool and a vibratory
arm carrying said flexible shaft in conformity with the movement of said tool
carriage, substantially as and for the purposes set forth.
30. In a carving machine the combination with a suitable frame, of a tool carriage,
two parallel motions connecting the same with said frame, connected guiding and
cutting tools having a universal joint connection with said carriage, a flexible shaft
connected with the cutting tool and a vibratory arm carrying said flexible power
transmitter in conformity with the movement of said tool carriage, substantially
as and for the purposes set forth.
31. In a carving machine the combination of a guiding mechanism constructed
with three rods having a jointed connection, the bifurcated extremity.of one rod
being formed with internal and external conical depressions in the same axial line,
and conical tipped stems passing through the ends of the other two rods into said
conical depressions, a suitable frame, a tool holder, guiding tool, a cutting tool and
mechanism for driving the latter, substantially as and for the purposes set forth.
32. In a carving machine the combination with a supporting frame of a movable
tool holder having a jointed connection with said frame, a cutting tool and a guiding
tool carried by said holder, an oscillatory yoke carrying a driving wheel, a
vibratory arm supported by said yoke and arranged to swing on an axis at right
angles to that of said yoke and a flexible power transmitter carried by said
arm and connected with said cutting tool, substantially as and for the purposes set
forth.
33. In a carving machine the combination of a suitable supporting frame, two
parallel motions suspended therefrom and connected to each other by a horizontal
rod, a yoke suspended from said rod carrying a pivoted guiding tool and a pivoted
cutting tool fastened together so as to move equally and simultaneously, a flexible
shaft connected to the cutting tool, and actuating mechanism, substantially as
described.
34. In a carving machine the combination of two suspended parallel motions, a
tool rod connecting them to each other at a suitable angle, and carrying brackets
rigidly secured thereto, a yoke pivotally secured to said brackets and having tool
holders pivoted thereto, carrying a cutting and a guiding tool, and an upright
projection on the holder of each tool, a cross bar pivotally connecting the said
upright projections, and a rotating flexible shaft connected to the cutting tool,
substantially as set forth.
35. In a carving machine the combination of a yoke consisting of a transverse
rigid bar with an open frame at each end, rigid therewith, a tool holder pivotally
secured within each open frame, an upright projection rising from each tool holder
bifurcated at the upper end, a cross bar extending from one projection to the other,
and pivotally secured by bearing screws at each end between said bifurcations, and
shank or hand piece depending from each tool holder, one having a cutting tool
and the other a guiding tool attached thereto, and the shank of the cutting tool
attached to a rotating flexible shaft, substantially as set forth.
36. In a carving machine the combination of a suitable frame, a vertical yoke
having pivotal bearings in the rear timbers thereof, a rod bifurcated at its rear
end and thence extending back of the frame, the bifurcated ends pivoted on bosses
on the side pieces of the yoke, and the front portion of the rod being in two parts
united by a sleeve and adjusting set screws, and beyond that being hollow and
projecting in front of the frame, a shaft pivoted within the yoke and carrying a
B

page_text: large and small pulley wheel, a shaft bearing having a shank loosely fitted within
the front end of the hollow rod, a flexible shaft supported by said bearing and
having at its upper end a horizontally arranged pulley connected thereto, an
endless belt connecting said pulley with the large pulley on the shaft in the yoke,
another belt running from the small pulley on the shaft in the yoke to source, of
power, guiding mechanism, cutting mechanism connected to the end of the flexible
shaft, and weights on the rear ends of the bifurcated rod to counterbalance the
weight of its forward portion and attachments, substantially as set forth.
37. In a carving machine the combination of a suitable frame, a vertical yoke
having pivotal bearings in the rear timbers thereof, a long bent rod having a cross
rod integral therewith supported by pivotal bearing screws passing through the side
pieces of the yoke, the said long rod extending back of the frame and also beyond
the front thereof, two parallel motions suspended from the front timbers of the
frame and united by a tool rod with cutting and guiding devices depending
therefrom, a cord connecting the said tool rod to the front end of the long rod, and
a weight on the rear end of the latter for counterbalancing the weight of the
parallel motions and attachments, substantially as set forth.
38. In a carving machine a suspended vertical parallel motion consisting of the
brackets d d secured to a cross timber of the supporting frame, wall rod F
supported between said brackets by pivotal bearing screws d', bifurcated clips e
.rigidly secured to the rod, castings e pivoted between the bifurcated ends of the
castings by bearing screws e, side rods G G whose upper ends are rigidly secured
to the castings e² and whose lower ends are similarly secured to the castings g
having double pointed pins h rigidly embedded in their lower ends, castings g',
whose upper ends are bifurcated and split, said bifurcations being provided with
inner countersinks to receive the points of the pins and having outer countersinks
in line therewith, double central cross-rod H H having end pieces frigidly
secured thereto, said end pieces being pivotally secured to the castings o
by bearing screws i, in line with the pins h, cross rods G' G' whose upper ends
are rigidly secured to the lower ends of the castings and whose lower
ends are rigidly secured to the upper ends of the castings p, bifurcated swivel-
pieces O pivotally secured to the lower ends of the castings p by bearing screws n,
castings N having upward projections ; pivotally secured to the lower central
parts of the swivel pieces O by bearing screws j', and tool rod J rigidly secured
to said lugs N, substantially as set forth.
39. In a carving machine the combination of a suspended vertical parallel
motion, consisting of a wall rod F, side rods G G and G G', double central' cross
rods HH, and tool rod J united by castings and conical pointed bearing screws,
swivel pieces O, and castings N, with a suspended horizontal parallel motion,
consisting of wall rod K, side rods L L, double central cross rod M, castings and
conical pointed bearing screws, and side rods L' L' united to the tool rod J by
right angled castings m whose horizontal arms are rigidly united to the ends of said
rods L' and whose vertical arms are provided with countersinks to receive bearing
screws passing through horizontally extending lugs 1, on the castings. N rigidly
secured to said tool rod J, substantially as set forth.
40. In a carving machine the combination with a suitable supporting frame, of 'a,
tool carriage provided with a guiding and a rotary cutting tool; a parallel motion
consisting of a double jointed parallelogram having variable angles and hinged at
one side to said frame and connected at the opposite side with said tool carriage so
as to permit of the free movement of said carriage and at the same time maintain
it constantly parallel with the axis on which said parallelogram swings, and a
flexible shaft connecting, the cutting tool with a suitable source
of power,
substantially as and for the purposes set forth.
41. In a carving machine the combination with a suitable supporting frame of a
tool carriage provided with a guiding and a rotary cutting tool, two parallel
motions consisting each of a double parallelogram having variablé angles and
connected at one side with said tool' carriage and hinged at the opposite side to said

page_text: frame in a line parallel with the axis of said carriage so as to permit of the free
movement of said carriage and maintain it constantly parallel with the axes on
which said parallelograms swing, and a flexible shaft connecting said cutting tool
with a source of power, substantially as and for the purposes set forth.
42. In a carving machine the combination with a suitable supporting frame, of
an oscillatory tool carriage provided with a guiding and a rotary cutting tool
pivoted to said tool carriage and connected with each other so as to be turned
simultaneously into various inclinations to the axis of said tool carriage, and two
parallel motions consisting each of a double parallelogram hinged on opposite sides
to said tool carriage and to said frame respectively, the sides of said parallelograms
being jointed together at the ends so as to permit of the variation of the included
angles and thereby permit of the free endwise and lateral movement of said
carriage, and maintain its axis constantly parallel with the axes on which said
parallelograms swing, and a flexible shaft connecting said cutting tool with a
source of power, substantially as and for the purposes set forth.
43. In a carving machine, a head having apertures to receive spindle carriers
and rods for suspending said head, in combination with pivot yokes connecting said
head and rods, substantially as and for the purposes set forth.
44. In a carving machine, a spindle carrier pivoted in a head and connected at
the upper end with a hand-piece so that any movement of the hand-piece is imparted
to the spindle carrier, substantially as and for the purposes set forth.
45. In a carving machine, a head having apertures for the reception of spindle
carriers, and vertical rods for suspending said head and connected therewith by
universal joints, in combination with a supporting frame from which said vertical
rods are suspended, said rods and supports being connected by universal joints,
substantially as and for the purposes set forth.
46. In a carving machine, the combination with an apertured head, a spindle
carrier pivoted therein and a hand-piece connected with said spindle carrier, of
vertical rods suspending said head and connected therewith by universal joints,
substantially as and for the purposes set forth.
Dated this 16th day of December 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.