IMPROVEMENTS IN MACHINES FOR TURNING OFF CROSSHEAD WRIST PINS, CRANK PINS, AND SIMILAR WORK
Year: 1868

page_text: LETTERS PATENT to Wilhelm Lund, of Jewry Street, in the City of
London, for the Invention of "IMPROVEMENTS IN MACHINES FOR TURNING
OFF CROSSHEAD WRIST PINS, CRANK PINS, AND SIMILAR WORK."-A com-
munication from abroad by Theodore A. Goff, of San Francisco,
United States of America.
Sealed the 19th June 1868, and dated the 18th April 1868.
PROVISIONAL SPECIFICATION left by the said Wilhelm Lund at the
Office of the Commissioners of Patents, with his Petition, on the
18th April 1868.
I, WILHELM LUND, of Jewry Street, in the City of London, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN MACHINES
FOR TURNING OFF CROSSHEAD WRIST PINS, CRANK PINS, AND SIMILAR WORK," to
be as follows:-
The Invention relates to turning off crosshead wrist pins, crank pins,
and all similar work while stationary and in place. It consists in the
employment of a hoop or ring put around the work to be turned by
being made in sections, and revolved about it in a grooved case, for tho
purpose of carrying the cutting tools,

page_text: The frame of the machine consists of two irregular side pieces con
nected rigidly together by bolts, which act as and are hereafter called
guide rods. Within the frame is the cutter ring revolving freely in its
grooved case, the ring being held in place by and sliding within the
case. The periphery of the ring is cogged, and gears through an
opening in its case with a pinion upon the crank shaft of the machine.
The cutter ring is in two sections doweled together and pinned. The
ring carries two cutting tools, one on each side, adjustable in a groove
transverse to the line of motion, and fastened by keys, the ends of
which are flush with the sides of the ring. The case is also in two
parts, held together by bolts and nuts, and is supported by and slides
back and forth laterally upon the guide rods carried by a feed screw
which runs between the flanges of the case, and is worked by an
excentric paul and ratchet in the usual manner. The case in its
movements to and fro carries with it the pinion which is feathered
its shaft and extends somewhat into the case. Pivot screws run through
the side pieces in the line of the centre of the cutter ring.
mode of adjusting the machine for use is as follows:-
The
First. To Turn off a Wrist Pin of a Crosshead in Place.-Remove the
crank shaft of the machine, also the case, and take the cutter ring apart;
next place between the crosshead and the wrist pin that section of the
case which will cause the crank to be outside, then slide one part of the
cutter ring into this section of the case around the wrist pin, after
which the other part of the ring is to be applied and fastened to its
counterpart; then take off the left-hand side piece of the frame (the
side piece next to the crank being called the right hand, and the other
the left-hand piece) and put the frame together across the engine slides
and adjust it by the pivot screws and set screws (which last-named
screws are to prevent the machine from rocking on the pivot or centring
screws), then fasten the other section of the case and the driving gear
in place, and the machine is ready for work.
Secondly. To Turn off a Crank Pin in Place.-Remove the left-hand
side piece of the frame and put an extra left-hand side plate in its stead,
pass the machine over the crank pin to be turned, the pin passing
through the openings through the slide plate and the cutter ring, and
pointing upon the centring screw in the right-hand side piece, adjust
he left-hand side of the frame by set screws, and the machine is ready
for work. If the collar at the end of the crank pin is larger than the

page_text: opening through the cutter ring the ring can be taken apart, as before
described.
Thirdly. The foregoing directions will enable a machinist to apply
the machine in all other cases where it is applicable. Cases will arise
in which the cutter ring and its case may be used, but in which
the particular frame described cannot be used, as, for example, in
turning off a space midway of a long stationary shaft. In all such
cases, however, the proper frame will suggest itself at once to a
machinist.
The operation of the machine is as follows:-Place the cutter ring
at one end of the pin to be turned, then adjust the cutter nearest the
other end of the pin for a chip and the ratchet for feeding in the proper
direction, now turn the cranks until the ring crosses the face of the
pin, then adjust the other cutter for a chip, change the feed, and turn
the crank as before, and so on back and forth until the pin is turned
to the size desired.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Wilhelm Lund in the Great, Seal Patent Office
on the 8th October 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1, WILHELM
LUND, of Jewry Street, in the City of London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of April, in the year
of our Lord Oue thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Wilhelm Lund, Her special licence that I,
the said Wilhelm Lund, my executors, administrators, and assigns, or
such others as I, the said Wilhelm Lund, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN MACHINES FOR TURNING OFF CROSS-
HEAD WRIST PINS, CRANK PINS, AND SIMILAR WORK," (communicated to me

page_text: from abroad by Theodore A. Goff, of San Francisco, United States of
America,) upon the condition (amongst others) that I, the said Wilhelm
Lund, my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, should particularly describe
and ascertain the nature of the said luvention, and in what manner the
same was to be performed, and cause the same to be filed in the
Great Seal Patent Office within six calendar months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Wilhelm Lund, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say :-
The Invention relates to turning off crosshead wrist pins, crank pins,
and all similar work while stationary and in place. It consists in the
employment of a hoop or ring put around the work to be turned by
being made in sections, and revolved about it in a grooved case, for the
purpose of carrying the cutting tools.
Figure 1 is a front elevation of a machine constructed according to
this Invention; Figure 2 is a vertical section of the same, transverse
to the axis of the cutter ring; Figure 3 is a side elevation of the same;
Figure 4 is an extra left-hand side plate. Similar letters of reference
indicate like parts in the several Figures.
The frame of the machine consists of two irregular side pieces G
and H, connected rigidly together by bolts D, which act as and are
hereafter called guide rods. Within the frame is the cutter ring A,
revolving freely in its grooved case B, the ring being held in place by
and sliding within the case, as shown by the Drawings. The periphery
of the ring is cogged, and gears through an opening in its case with
the pinion C upon the crank shaft I. The cutter ring is in two sections,
doweled together and pinned, as shown at T. The ring carries two
cutting tools, one on each side, adjustable in a groove transverse to
the line of motion, and fastened by keys, the ends of which are flush
with the sides of the ring. The case is also in two parts, held together
by bolts and nuts, and is supported by and slides back and forth laterally
upon the guide rods D carried by the feed screw E, which runs between
the flanges of the case, and is worked by the eccentric paul and ratchet
in the usual manner, as shown by the Drawings. The case in its move-

page_text: ments to and fro carries with it the pinion C, which is feathered to its
shaft and extends somewhat into the case. The pivot screws K run
through the side pieces in the line of the centre of the cutter ring. The
mode of adjusting the machine for use is as follows:―
First. To Turn off a Wrist Pin of a Crosshead in Place.-Remove the
crank shaft I, also the case, and take the cutter ring apart; next place.
between the crosshead and the wrist pin that section of the case which will
cause the crank to be outside, then slide one part of the cutter ring into
this section of the case around the wrist pin, after which the other part of
the ring is to be applied and fastened to its counterpart; then take off
the left-hand side piece of the frame (the side piece next to the crank
being called the right hand and the other the left-hand piece), and put
the frame together across the engine slides, and adjust it by the pivot
screws K and the set screws L (which last-named screws are to prevent
the machine from rocking on the pivot or centring screws), then fasten
the other section of the case and the driving gear in place and the
machine is ready for work.
Secondly. To Turn off a Crank Pin in Place.-Remove the left-hand
side piece of the frame and put the side plate F in its stead, pass the
machine over the crank piu to be turned, the pin passing through the
openings through the slide plate and the cutter ring, and pointing upon
the centring screw in the right-hand side piece, adjust the left-hand
side of the frame by the set screws W, and the machine is ready for
work. If the collar at the end of the crank pin is larger than the
opening through the cutter ring the ring can be taken apart, as before
described.
Thirdly. The foregoing directions will enable a machinist to apply
the machine in all other cases where it is applicable. Cases will arise
in which the cutter ring and its case may be used, but in which
the particular frame described cannot be used; as, for example, in
turning off a space midway of a long stationary shaft. In all such
cases, however, the proper frame will suggest itself at once to a
machinist.
The operation of the machine is as follows:-Place the cutter ring
at one end of the pin to be turned, then adjust the cutter nearest the
other end of the pin for a chip and the ratchet for feeding in the proper
direction, now turn the crank until the ring crosses the face of the
pin, then adjust the other cutter for a chip, change the feed, and turn

page_text: the crank as before, and so on back and forth until the pin is turned
to the size desired.
And having now described the nature of the said Invention, and in
what manner the same is to be performed, I declare that I claim, the
cutter ring, constructed and operated substantially in the manner and for
the purposes herein-before-described with reference to the accompanying
Drawings.
In witness whereof, I, the said Wilhelm Lund, have hereunto set
my hand and seal, this Fifth day of October, One thousand eight
hundred and sixty-eight.
W. LUND. (L.B.)