Improvements in Carving Machines.
Year: 1891

page_text: Date of Application, 3rd Mar., 1891-Accepted, 18th Apr., 1891
COMI DIN D
Improvements in Carving Machines.
A communication from abroad by STEPHEN FREEMAN MOORE, of the City of
Milwaukee, in the County of Milwaukee, in the State of Wisconsin, United
States of America, Manufacturer.
1, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil 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 improvements in carving machines adapted for carving
several pieces of material of a particular design existing in a model or pattern.
The object of the invention is to improve the strength and enlarge the capability
of the machine and at the same time to secure more satisfactory adjustments and
reliability of operation in the machine than has heretofore been obtained.
In the drawings:
Figure 1 is a side elevation of this machine, parts being broken away and other
portions being shown in section for better illustration.
Figure 2 is a detail of the weight supporting device in the counterpoise
mechanism.
Figure 3 is a top plan view of a portion of the mechanism, the view being taken
on line 3-3 of Figure 1 looking downwardly.
Figure 4 is a detail in section on line 4-4 of Figure 3.
A bracket A, is secured rigidly to the pillar or permanent structure B. A. vertical
post C is hinged so as to swing horizontally on the bracket A. A. driving shaft D
has its hearings in the bracket A in the vertical line of the axis of the post C on
the bracket. The driving shaft is provided with fast and loose pulleys E E' for
carrying the power-supplying belt. A standard 10 is hinged on the post C on the
side opposite to its connection with the bracket A by and through the arms 11, and
the upper arm 12 fixed on the standard 10 and having bearings at a distance there-
from in brackets FF secured rigidly to the post C. Countershafts 13 are located
in the axial line of the standard 10 on the post C and have their bearings in the
brackets F F and G G fixed on the post C or in the arms 12, or in both, as is most
convenient for construction. These countershafts are driven by belts H running
on pulleys thereon and on the driving shaft D. A rod 14 is connected, movable
vertically to the standard 10 by means of frames 15, which are clamped about the
rod 14 by being clamped to tool-holding arms 16. The several frames 15 extend
rearwardly on both sides of the standard 10, and alongside and at the rear of the
arms 12. The frames 15 are each provided with pins 17, 17, 18, 18, and 19, which
several pins are inserted in sockets therefor in the frame and bear respectively
against an arm 12. The pins 17 bear against the arm 12 opposite the standard 10,
the pins 18 bear against the ends of a cross head end of the arm 12, and the pin 19
bears against the rear end of the arm 12, all these pins being held up to their work
by screws 20, turning in the frame against the outer ends of the pins, the screws
being locked in place by jam nuts 21. A. small set screw 22 turns against the
movable bearing pin to lock it against rotation. These several frames 15, by and
through the bearing pins 17, 18 and 19, are movable vertically to a limited extent
on the standard 10. Small antifriction bearing wheels 23 are journalled in bolts 24,
which bolts pass through apertures therefor in the standard 10 and are secured
thereto by nuts 25. 25. These wheels 23 bear against and travel on the rod 14,

page_text: forming a bearing in opposition to the pin 19 for holding the frame 15 in its proper
relative position to the standard 10 and its arms 12, 12. The inner ends of the
arms 12 are slotted and made bifurcated and formed into bands which fit about
the standard 10 and are clamped thereto by bolts 26 through the bifurcate parts of
the arms.
The tool-holding arms 16, projecting toward the front from the rod 14, are
attached rigidly thereto, part of them by being bolted to frames 15, which, with
the arms, encompass and clamp the post and others of them by being bolted to com-
plementary clamps 27 which also clasp the rod 14. One of the arms 16 carries the
guide 28 in its outer end, and the other arms 16 terminate in a hollow globe-formed
shield 29 in which the vertical tool-carrying spindles 30 are journalled. These
spindles and their cutting tools 31 set therein are arranged in a vertical line in
which the guide 28 is also located. Belts 32 run on pulleys on the countershafts 13
and on pulleys on the spindles 30. These belts 32 are guided and tightened by
running on the intermediate idle pulleys 33 journalled on arbors 34 supported and
adjustable on brace rods 35 secured at one end to the lower part of the shields 29
and at the other end to brackets 36 fixed on the rod 14. The arbors 34 are
movable on the brace rods 35 and are secured adjustably thereto by means of set
screws 37.
The rod 14 and the mechanism attached directly thereto are supported in a
balanced or counterpoised position on the standard 10 by means of a tilting lever 38
fulcrumed medially on the standard 10, which lever, at its outer ends, terminates in
vertically segmental heads 39, to the upper edge of one of which heads a strap 40
is secured, which strap, at its outer extremity is made fast to the upper arm 16,
and a strap 41 is made fast to the upper edge of the other segmental head 39,
which strap, at its lower end, is made fast to the lower edge of a segmental head
on a sleeve 42, adjustable on an arm 43 pivoted at one end to the recurved upper
end of the post C and carrying on its other extremity the weight or weights 44.
The weights 44 are adjustable on the arm 43 toward and from its pivoted extremity,
but are located nearly over the axis of the post C on the bracket A. The arm 43
passes through a slot therefor in the post. C at a little distance from its outer or
weight supporting end, in which slot it has vertical movement, but is held against
horizontal motion. The strap 41 passes through a slot therefor in the curved top
of the post C and is provided with a swivel 45 to accommodate the horizontal
swinging movement of the rod 14 on the post 10. This strap is located in the
continuation of the axis of the countershafts 13.
A series of tables 46 supported in a frame having posts 47 is arranged to receive
and support the pattern and the material to be carved, one table, that over which
the guide 28 moves, being used to support the pattern.
The table-supporting frame is movable vertically in ways therefor in the fixed
rails or standards 48, by means of screw threaded rods 49 supported and having
their bearings in cross rails 50, and turning by screw threads thereon through
brackets secured to the frame.
The operation of the machine is substantially as follows; the post C swings
horizontally on its support, the standard 10 is supported indirectly and swings
horizontally on post C, the rod 14 supporting the tracer and the tool-carrying
arms moves vertically on the standard 10 being counterpoised by the weights 44.
The cutting tools carried in the horizontally swinging and vertically moving
arms 16 are revolved by the belts 32 running on pulleys on countershafts 13 in the
pivotal axis of the standard 10 on post C which countershafts 13 are in turn
rotated by belts H running on pulleys on the driving shaft D in the pivotal axis
of the post C on its support. The tools are moved vertically and horizontally
concurrently by the operator, being all fixed on the rod 14, to which also the guide
arm is affixed, the guide being held to the pattern by the operator grasping a
shield 29, and the cutting tools being moved correspondingly by the movement of
the guide or tracer over the surface of the pattern.

page_text: 11
The material to be carved and the pattern are supported on tables 46 located in
suitable positions therefor.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is
:-
1. In a carving machine, the combination, with a horizontally swinging post
as C, a thereto hinged and horizontally swinging standard as 10, and a thereon
supported vertically movable rod as 14 having a plurality of tool-carrying arms
affixed thereto, of a lever as 38 pivoted medially on the standard, from one end of
which lever the rod 14 and the tool-carrying arms thereon are suspended, a strap
as 41 provided with a swivel 45, which strap is located in the continuation of the
line of the axis of the countershafts 13 on the post C, an arm 43 to which the
strap 41 is attached medially, the arm being pivoted at one end on the post and
suspended by the strap 41 from the lever 38 and carrying a counterpoise weight
as 44, substantially as described.
2. In a carving machine, the combination of a horizontal swinging post as C
having a recurved upper portion, a standard 10 hinged and swinging horizontally
on the post C, and a rod as 14 having tool-carrying arms fixed thereon, a tilting
lever as 38 pivoted medially on the standard 10, from one arm of which lever the
rod 14 and the tool-carrying arms thereon are suspended, a counterpoise arm as 43
pivoted at one end in the extremity of the recurved end of the post C, a slot in
the post through which the arm passes and is guided movable vertically, and a
strap having a swivel located in the continuation of the axis of the counter-
shafts 13 on the post C, which strap is attached medially to the arm 43 and to
an arm of the lever 38, whereby the arm 43 is suspended from the lever, substan-
tially as described.
3. In a carving machine, the combination, with a horizontally swinging standard
as 10 and thereto affixed rearwardly extending arms 12, of vertically movable
frames as 15 located alongside and at the rear of the standard 10 and the arms 12,
to which frames are affixed a frame-connecting rod 14 supporting the tool-
carrying arms, pins 17 and 18 arranged in pairs and bearing opposite each
other against the arms 12, pins 19 and bearing wheels 23 interposed between
the standard and rod and opposing the bearing of the pins 19, substantially as
described. .
4. In a carving machine, a rod as 14, a tool-carrying arm 16 secured to and
projecting horizontally from the rod 14, a shield 29 rigid on the arm 16 and
in which shield a tool-carrying spindle is pivoted, a straight brace rod located
at a distance from the arm 16, which rod is secured rigidly to the rod 14 and
to the shield 29, an arbor 34 supported and adjustable on the brace rod, a
pulley 33 loose on arbor 34 and a belt running on the tool-carrying spindle and
against and beyond the pulley 33, all combined substantially as described.
5. In a carving machine, a straight vertical post C hinged so as to swing hori-
zontally on a fixed bracket, a therewith parallel straight vertical standard 10
hinged so as to swing horizontally on the post C, a straight vertical rod 14 located
near to and movable vertically alongside of and guided by the standard 10, a
plurality of homogeneous horizontally projecting tool-carrying arms and a sub-
stantially similar guide-carrying arm affixed to the rod 14, and means for supporting
and balancing the rod 14 and the thereto attached mechanism, all combined sub-
stantially as described.
6. In a carving machine, the combination, with a horizontally swinging post as C,
a thereto hinged and horizontally swinging standard as 10, and a thereon supported
vertically movable rod as 14 having tool-carrying arms affixed thereto, of a lever
as 38 pivoted medially on the standard, segmental heads formed on the extremities
of the arms of the lever, a strap secured to the upper edge of the segmental head
5 of one arm of the lever, which strap is attached to and supports the vertically

page_text: moving post and tool-carrying arms thereon, and á stráp secured to the upper edge
of the segmental head of the other arm of the lever, which latter strap is pro-
vided with a swivel and carries thereon a rod supporting a counterpoise, substan-
tially as described.
Dated this 2nd day of March 1801
WM. P. THOMPSON & Co.,
Agents for the Applicant.