IMPROVEMENTS IN CAR TRUCKS AND AXLE BOXES FOR SAME, AND IN TOOLS FOR DRESSING CYLINDERS. CAR WHEELS. AXLE JOURNALS. AND BEARING CAPS."
Year: 1881

page_text: LETTERS PATENT to Joseph Nottingham Smith, of New York City, in the
United States of America, Gentleman, for an Invention of "IMPROVEMENTS IN
CAR TRUCKS AND AXLE BOXES FOR SAME, AND IN TOOLS FOR DRESSING
CYLINDERS. CAR WHEELS. AXLE JOURNALS. AND BEARING CAPS."
COMPLETE SPECIFICATION filed by the said Joseph Nottingham Smith
at the Office of the Commissioners of Patents on the 8th December 1881.
JOSEPH NOTTINGHAM SMITH, of New York City, in the United States of
America, Gentleman. "IMPROVEMENTS IN CAR TRUCKS AND AXLE BOXES FOR
SAME, AND IN TOOLS FOR DRESSING CYLINDERS, CAR WHEELS, AXLE JOURNALS,
AND BEARING CAPS."
My Invention relates,--
First. To improvements in a truck for railway carriages wherein the truck is
pivoted to the carriage or car-body at its end, instead of at its center, and the
springs are mounted in an evener.
Second. To improvements in an axle-box for railway-cars.
Third. To improvements in a machine for dressing the journals of car-axles and
the treads of car-wheels, whereby both of the journals on an axle and both of the
wheel-treads may be simultaneously dressed.
Fourth. To improvements in a machine for dressing the bearing-caps for car-axle
journals, and also plane as well as curved surfaces.
Fifth. To improvements in a machine for dressing out locomotive and other
cylinders, whereby the same may be dressed without removing them from their
seats if desired.
The exact nature of the improvements of which my Invention consists, will be
readily understood from the following description and Drawings, in which the first
five Figures illustrate my improved truck for railway cars.
This Invention relates to a method of constructing the trucks of railway cars,
and in mounting the body of the car on the same. The ordinary method of

page_text: mounting the body of the car on the truck is by means of a pintle or axis in the
center of the truck, and midway between the wheels. This construction permits
the car-body to rock both longitudinally and sidewise on the truck, and tends to
produce a pitching or galloping motion. The pairs of wheels on the truck being
also on opposite sides of the fulcrum or pivot point, and at equal distances there-
from, there is a constant tendency in the truck to oscillate on the vertical pivot
and throw the flanges of the wheels first against one rail, and then by rebound
against the other. The springs are also arranged generally independently of each
other.
In the truck hereinafter described the truck frame is pivoted at its end to the
end of the car-body, and swings or plays under the bottom of the car on interposed
rollers, the wheels being all on one side of the pivot point. The springs at each
side are mounted in rocking-beams or eveners in such a manner that the weight
thrown upon one axle-journal is shared by the other journal on that side.
In the Drawings which serve to illustrate my Invention, Figure 1 is a side-
elevation of the truck partly in section at the left, to better illustrate the con-
struction; Figure 2 is a fragmentary plan of the truck with the car-body removed;
Figure 3 is a plan of the underside of the truck drawn to a smaller scale; Figure 4
is a cross section of the housing-evener, and spring on the line 4-4 in Figure 1
Figure 5 is a view showing a slightly modified construction of the evener and
spring.
Let A represent the platform or body of a car; B, the car-axles, and C the
wheels thereon. D represents the truck-frame which is connected to the car-body
by means of a vertically arranged pin a. This pin, it will be observed, is arranged
to pass through the end of the truck-frame in the median line of the car, and at
the end of the latter. The car-body does not rest directly upon the truck, but
upon rollers b, b, mounted on the frame of the truck, and, if desired, metal tracks
or ways c, c, may be fixed on the bottom of the car-body for the rollers to bear and
travel upon.
The end of the axial beam D¹ of the truck projects beyond the inner
end of the truck frame, and plays between fixed stops on the car-body to limit the
swing of the truck. These stops may be formed by bolting a housing d onto the
bottom of the car, in a position to house the end of the beam, the ends of the
housing serving as stops, as shown in Figure 3.
The truck on the other end of the car (not shown) is constructed and mounted in
the same manner as that just described, the free or swinging ends of the two
trucks being nearest the centre of the car.
The axle-boxes, the evener, and the springs are mounted in a housing E, which
may be of cast-iron, wrought-iron, or steel. This housing, which includes the
pedestals, is formed with a socket or recess f to receive the side beam of the truck-
frame to which it should be firmly bolted, and with cheeks or side plates g, g,
which are recessed to form pedestals to receive the axle-boxes F, F, and their
saddles h, h. The saddles and boxes are adapted to play up and down in their
pedestals, the former being grooved to fit the margin of the pedestal recesses,
whereby their movements are guided:
;
G is the evener or rocking-beam which is preferably made from cast-steel. This
evener has a ball and socket bearing at i in the housing E, and has sockets or
recesses to receive the ends of the springs H. The springs are laminated, and are
prevented from escaping out of their sockets by means of the bolts j. The roof of
the socket in which the spring is fixed in is slightly inclined (see Figure 1), and
relieved or rounded off at its outer end, as shown at k. The outer ends of the
springs rest upon the convex tops of the saddles h, and are prevented from lifting
off their seats by clips l. At m on the top of the evener is a swell or projection
which strikes the top of the housing, and limits the extent of motion of the
evener.
It will be understood that there are two housings E and two eveners G for each
track, one on each side of the car, and that there are two springs H mounted in
each evener, although only one is fully shown in Figure 1, the other being partly

page_text: hidden by exterior parts. One half of the evener is also shown in dotted
lines, but as both ends of it are alike, its construction will be readily under-
stood.
To prevent the evener from falling out when the boxings are removed as well as
to give additional strength to the housing, the two plates g, g, are preferably
connected by means of a tie-bolt n. A bolt or pin o is also placed under the spring
H for the same purpose.
When the car is heavily loaded it may be desirable to give the spring more
stiffness. To accomplish this a cam or concentrically mounted shaft p, provided
with bearings in the recess in the evener, is arranged under the spring, at the point
where it tends to curve downward under a heavy load (see Figures 1 and 4), and
this cam is arranged to be turned by means of a wrench so as to cause it to press
the spring firmly against the roof of the recess. By this means the spring is
virtually shortened and made stiffer. Other means, as the insertion of wedges,
may also be employed for this purpose.
The stirrup-straps which embrace the housing E have some novel features which
will now be described. These as ordinarily constructed are bolted to the truck-
frame, and to remove one of the car-axles with its boxes, it is necessary to remove
the entire stirrup-strap which leaves the other axle and boxes of the truck free to
escape from the housings. In the construction heroinafter described each stirrup-
strap is made in two parts, and no bolts-and-nuts are employed in attaching it.
is
I is a stretcher which extends between the ties g of the pedestals formed in tho
housing E. This stretcher has shoulders r which abut against said ties and lips or
flanges, which take over shoulders on the same, as clearly shown in Figure 1.
It is an angular strap, the horizontal portion of which takes under the pedestal,
crossing the recess in which the axle-box plays, and lying in a recess in the bottom
of said pedestal. On the end of this portion is a pin, which is arranged to pass
through a hole in shoulder r of the stretcher I; another portion of the strap I
extends obliquely up to the underside of the truck-frame where its extremity
bent over to fit under the said frame and perforated to receive a spring bolt 8.
This bolt is normally pressed down so as to protrude through the strap by means
of a spring t on the truck-frame, which is arranged to press elastically on its
upper end. To prevent the bolt from dropping out the spring may be arranged to
pass into or through the bolt and thus uphold it as well as press it down. To keep
the strap firmly in place on the bolt a button u is arranged to be turned over said
strap and the end of the bolt, and it is found convenient to utilizo as a button the
head of a bolt employed to secure the timbers of the truck-frame together. It is
also found desirable to permit the button to take over a shoulder on the lower end
of the bolt 8, and not to pass over the extreme end of the same.
To further
strengthen and brace the strap a bracket flanger is affixed to it, and this bracket
is arranged to rest upon a shoulder of the pedestal, as shown in Figure 1. Only one
of the straps 1 of the stirrup-strap has been described, as both are precisely alike.
To remove the strap the bolts are pressed back and the strap I' removed by
drawing the pins from their sockets. The stretcher may be allowed to remain.
The truck frame may now be lifted off the wheels, as tho axle-boxes are free to
slide out of their recesses in the housing. As before stated, the stirrup-straps I' on
opposite sides of the truck may be removed and one axle freed while the other is
retained in place. When the truck is raised or jacked up, the weight of the wheel
and axle and axle-box rests upon the horizontal part of the strap, and this
weight is sustained by the pin and bracket-flange 7.
To keep the pin a in place a spring-dog w is mounted on the truck-frame and
arranged to normally and elastically engage a groove in said pin, as best shown in
Figures 2 and 3.
In Figure 1 tho spring H is shown as composed of short lamina of equal length,
but they may be made of different lengths, as shown in Figure 5, and one or all of
them may be made to run through, as in the case of the lower lamina in said Figure,
thus making the two springs on one side in whole or in part of one piece. This is

page_text: not necessary, however, and is more expensive than the construction first described.
In this construction also the pin or bolt o is omitted as unnecessary.
It will be seen that by mounting the car-body on the trucks as herein shown the
pivot of the leading truck will always be ahead of the first pair of wheels, an
arrangement which will materially assist in keeping the truck on the track, as
these wheels are the ones most liable to jump off the rails. Being drawn it is
obvious that they will keep to the track better than if pushed, as in the ordinary
construction, and the car-body being arranged to rest at four points on the truck-
frame will also serve to steady the latter and keep it in place.
Other readily detachable means of securing the ends of the stirrup-straps to the
truck may be employed in lieu of that shown, as, for instance, a gravity pin may
be employed in lieu of a spring-bolt, and a spring dog in lieu of button u.
The
rollers 6 might alse be dispensed with, as they are only employed to lessen the
friction.
The housing might be formed simply of the two plates g,g, and the truck be
arranged to rest directly upon the evener; as shown, a plate of the housing is
interposed. The evener might have a ball i to fit into a socket in the housing or
truck frame instead of the reverse arrangement shown. So far as the evener is
concerned the housing may be considered a part of the truck frame.
In lieu of the housing d other forms of stops may be employed to limit the
swing of the truck, as, for example, separate adjustable blocks fixed to the car-
body.
I have devised an axle box, which is especially adapted to my improved truck,
and this is illustrated in Figures 6, 7, 8, 9, 10, and 11 of the Drawings.
My present Invention relates to improvements adapted in part to all kinds of
axle-boxes, but most particularly to that class known as "self oilers," wherein a
vibratory pump to be actuated by the jolting or movement of the cars is employed
to raise the oil from a reservoir in the housing and deliver it onto the axle journal,
The novel features of my present Invention will be fully described hereinafter, and
fully defined in the claims.
In the Drawings, Figure 6 is a longitudinal vertical mid-section of my improved
axle-box; Figure 7 is a transverse section on the line 2-2, in Figure 6; Figure 8
is a detached sectional view adapted to illustrate the mode of opening and closing
the box; Figure 9 is a plan-view of the stopping-bar and a cross-section of the
oil-pump taken on the line 4-4, in Figure 8; Figure 10 is a view of the
underside of the bearing-cap; Figure 11 is a plan of the dust-excluding half-
collar.
My box may be adapted to trucks of special or ordinary forms, but I have herein
shown it as adapted to a pedestal truck.
A is the housing of the box, and B is the saddle mounted thereon and provided
with a ball-and-socket support of the usual kind. The saddle is rounded or convex
on its top to receive the end of the truck-spring C, shown in Figures 6 and 7, the
said rounded seat being recessed between said guards a, a The spring is held in
place by means of a clip D, which has curved ends that take under flanges b, b, on
the guards a, a. A screw c prevents the clip from jolting off or becoming displaced
by any means. The flanges b are short, and in placing the clip it is only necessary
to seat the latter on the saddle-guards at one side of small-flanges b and move it
laterally until it engages the same.
By this arrangement of the saddle and truck-spring, that is to say, with the
four ends of the two truck springs resting upon the four convex saddles, the saddle is
permitted to play properly under the end of the spring without undue grinding
and friction.
When the truck is lifted for the removal of the boxes from their pedestals the
clip or stirrup D prevents the saddles from being removed with the boxes.
E is a dust-excluding half-collar mounted at the back of the housing, being
provided with suitable keepers which permit it to play up and down under the
axle-journal F to a limited but sufficient extent. It has a lip d, which projects

page_text: nto the housing under the journal, and a spring e arranged under said collar keeps.
the same pressed normally up against the journal during all the movements and
fluctuations of the latter. The lip & serves in some degree to prevent the oil in
the well G from being forced out at the back of the housing around the journal,
and it has obliquely cut edges f,f, (see Figures 6, 7, and 11) which serve to scrape
the surplus oil from the journal at the back of the box and allow it to flow back
into the well. H is a thin washer-plate, which fits into a recess in a dust-excluding
slide or cap I that slips down in keepers at the back of the housing and rests on
the same when seated. The cap I does not descend when the collar E is pressed
down, but the washer-plate H rests upon the collar E and the axle-journal and
descends with them, thus preventing the play of the journal from leaving an
opening above it through which dust may enter the box or oil escape therefrom.
J is the bearing-cap which slides into the upper part of the housing, resting on
bearings in the same." The back or inner end of the bearing-cap is provided with.
a stud or projection g, which takes over a suitable provision on the slide or cap I
(see Figure 6), and prevents the latter from rising while the bearing cap is in
place.
I make the bearing by preference wholly of anti-friction metal, and form within
it an oil-channel which connects an oil-recess h' in the top of the cap at its outer
end with the inner end of a serpentine channel h³ in the underside or face of the
cap next the journal. This channel opens into an enlarged recess or cavity h³ in
the cap in which the button i of the journal plays. By this means I am enabled
to deliver the oil which falls into the recess h¹ from the pump to the inner end of
the bearing, whence it flows back through the serpentine groove or channel h¹
to the front. This form of channel compels the oil to return to the front and to
traverse a considerable portion of the surface of the journal in doing so, whereby
the best lubricating results are attained. And when the journal is at rest the
serpentine groove forms pockets to retain the oil on the journal, and prevent it.
from dripping back into the well.
Referring to Figures 6, 8, and 9, K is a stopping-bar which is provided with a
detachable face-plate j to receive the wear and blows from the axle-button i. In
formerly patented constructions this plate, which is the only part subject to wear,
was formed in one piece with the stopping-bar, and when it became worn or
injured, the entire bar head had to be removed. In my present construction it is
only necessary to remove and renew the plate, which is a simple and inexpensive
matter. The stopping-bar is made to embrace the body of the oil-pump chamber L
at a point where the latter is reduced (see section in Figure 9), and the embracing
jaws of the bar are grooved at k, k, to engage keepers or ribs l, l, in a recess in
the door M of the box. Ribs m on the stopping-bar K and chamber L take also
into grooves in the door M, whereby the door and the bar and pump-chamber are
secured together, and can only be separated by first sliding the latter two longi-
tudinally out from the former, and then separating the two latter by a lateral
movement, as indicated in Figure 9. The chamber L is held in place in the
door M, and the door in place on the housing A by the following described
mechanism :-
On the back of the chamber L are fixed at their upper ends two leaf-springs n
and o, the former of which is longer than the latter; and on the inner face of the
door M is formed a shoulder p. When the chamber L is slid into the grooved
recess in the inner face of the door to the proper distance, the free end of spring o
wipes over the shoulder p, and rests behind it. This prevents the chamber from
being drawn out until the spring o is released from the catch or shoulder again by
means of a slender pin or wire, which is inserted through an orifice in the door.
The above described position of the parts is shown in Figure 8.
Around the lower edge of the door m is a flange r, which is arranged to take
over the margin 8 of the housing A when the door is in place, and said door is also
provided with a depending flange 71, arranged to take over the margin s' of the
housing at that point. A beveled lip on the lower edge of the door M also

page_text: engages a corresponding beveled inner face of the housing when the door is in
place.
Referring to Figure 8, it will be seen that the pump chamber L and the stopping-
bar K attached thereto have been slipped into their seat in the door M far enough
to cause the spring o to engage the shoulder p and hold them in place. The
chamber is now pressed into the housing and pushed forward or inward until its
curved upper portion t takes under the correspondingly curved or shaped portion
u of the roof of the housing, when the parts will appear in the position illustrated
in Figure 8. The door now stands raised above its seat on the housing, and may
be pressed down into place. The parts will then assume the position shown in
Figure 6, that is to say, the flanger will have engaged the flange s¹, and the
flanges r,, will have engaged and embraced the margin of the housing at 8. The
longer spring m will have wiped over and engaged behind the shoulder p on
the door M, and the latter will be firmly locked in place, for the reason that the
door cannot be removed without first being raised a little, and the spring n prevents
it being lifted independently of the pump-chamber, and the latter cannot be lifted
by reason of its upper portion t resting against and under the portion u of the
housing. The door and oil pump may be removed together by pressing back the
spring n until it clears the shoulder on the door, as will be readily understood.
The laterally projecting wings u, u, of the plate ; on the stopping-bar rests against
the end of the bearing-cap J, and the projecting portion t of the pump-chamber
against a raised rim won the cap, as clearly shown in Figures 6 and 8. This
effectually prevents the bearing-cap from working out, and it in turn keeps the
cap or slide I in place.
Thus it will be seen that no bolts or screws are employed to keep the several
parts in place, only the springs n and o being required.
The novel features of the oil-pump relate to the construction of the valve-
chambers. The hollow or tubular plunger N vibrates in the usual way, and a
cup a containing the inner valve is screwed onto its lower end. This cup plays
in a recess or enlargement in the lower end of the pump-chamber, and its upper
edge takes against the shoulder formed by said enlargement which limits the lift of
the plunger.
Another cup y containing the outer valve is made to slip onto and fit tightly the
cylindrical shouldered extremity of the pump-chamber L, where it is held in place
by a flange z on the lower end of the stopping-bar K which takes under the
bottom of the cup y, or engages a rabbitt or groove formed in it, as shown. This
construction is much simpler than that usually employed in this class of pumps,
and avoids the necessity of employing screws or extraneous contrivances for
securing the lower or outer valve-chamber in place. The two cup-like chambers x
and y have apertures in their bottoms,. which are controlled by the valves in the
usual way.
I wish it understood that I do not confine myself to the precise construction and
arrangement of the parts as herein described, as some variation therein may be
made without departing from my Invention. As, for example, the stopping-bar
may in some cases be formed in one with the pump chamber, or the spring o
may in some cases be omitted, and other means if desired be employed to retain
the pump in its keepers in the door. The stud g on the bearing-cap might also be
arranged to enter a recess in the slide I. Other minor departures of this character
will readily suggest themselves to the maker or user of the box.
The third part of my Invention is illustrated in Figures 12 and 13, and is
intended for dressing and turning up the axle journals and wheels of a truck.
My Invention contemplates the dressing of the two wheel-treads and journals at
one operation, but any of the cutters may be thrown out of operative connection
when desired.
In the Drawings Figure 12 is a plan of the tool, and Figure 13 is an end-
elevation of the same. A is a bed plate mounted upon which are bearings B, B',
for the fixed or "dead" center C, and the adjustable or live center D.. The latter

page_text: is provided with a hand-wheel A and screws into its bearing in the usual way
with such centers; E represents a car axle which is fixed between the centers as in
a lathe, and on which are fixed in the usual way the car-wheels F, F. On the car-
axle E is fixed at the proper point a split pulley or sheave G, the two halves of
which are held together by bolts in a well known way. The pulley may be
secured to axle by means of set screws b, b, which also serve to center it.
H is a shaft mounted rotatively in bearings in arms I, I, which project out, by
preference, from the bearings B, B¹. This shaft H bears a pulley J through which
the shaft is rotated by a belt, a sheave Q¹ which is connected by a belt c with the
pulley G on the car-axle, and two sheaves K which drive the rotating cutters
hereinafter described. All of these pulleys are keyed or otherwise fixed on the
shaft H.
I will now describe the cutting mechanism for dressing the treads of wheels F,
and as this.mechanism is in duplicate, one cutter for each wheel, it will only be
necessary to describe one set.
On the shaft H is fitted a sleeve L, which carries an arm L¹. On the free end
of this arm is a bearing d, in which is rotatively mounted a shaft e, on one end of
which is fixed a sheave K¹, connected with the sheave K by a belt f, while on the
other end is fixed a cutting wheel g preferably set with diamonds, as it is to dress
the hardened tread of the wheel. Rotation of the shaft H imparts slow rotation
to the car-axle and wheels through the sheaves G; G¹, and the belt c, and rapid
rotation to the diamond cutting-wheel g through the sheaves K, K¹, and belt f.
To feed the cutter up to its work the following described mechanism is
employed From the sleeve L there projects at the proper angle an arm L³, and
to the free end of this is coupled a rod which is capable of adjustment as to length,
and the lower end of which is connected removably to a bar M fixed in arms or
projecting flanges M' on the bearings B, B². The rod above referred to is com-
posed of two sections h, h¹, one of which has a right hand and the other a left hand
screw thread, a nut i being employed for coupling the two. On the free end of
the section h¹ of the rod is formed a hook ; to engage the bar M, and I prefer to
make the lip of this hook elastic, so that in engaging the bar it must be slightly
expanded until it is properly seated, when it returns to its normal position. This
prevents the hook from being readily disengaged. The cutter g is fed up to or
away from the tread of the wheel by turning the nut i, which lengthens or
shortens the adjusting-rod, the result depending on which way it is turned. The
rod in lengthening abuts on the bar M and lifts the arm. L', thus pressing the
wheel g down to its work. The shaft H being the center on which the cutter
arm L swings radially, it will be seen that no amount of movement of said arm
will slacken the belt f.
I will now describe the mechanism for feeding the cutter transversely across the
face of the work. To better illustrate the construction of these parts, I have
shown them in section at the left hand in Figure 12.
The sleeve L passes through the arm I, where it forms a bush around the
shaft H, and its outer end beyond said arm is screw-threaded to receive a milled
nut N. This nut has a groove k formed in its neck or boss, which groove is
engaged by a dog on the arm I, whereby the said nut is permitted to turn freely,
but is always kept up to its bearing against the arm I by said dog. By turning
the nut N the sleeve L is caused to move along the shaft, bearing the cutter g and
its driving wheel K' along with it.
So far as described the operation is as follows:-
The car-axle bearing the two wheels is fixed between the two centres C and D
as in a lathe. Any material difference in the length of axles and train of wheels is
compensated by moving and adjusting the bearing B' on the bed-plate, the object of
this being to bring the cutter properly over the work. As the arm I is mounted on
the bearing B¹, and the sleeve L must move with said arm when the bearing is
moved, it will readily be understood how the movement of said bearing affects the
position of the cutter...

page_text: The axle being properly set, the split pulley G is fixed thereon at the proper
place. A split pulley must be employed, as the car wheels are fixed on the axle
and prevent the slipping on of a pulley at the end of the axle. Several split
pulleys may be at hand of different sizes so that the speed at which the axle is to
rotate may be properly adjusted, but one size will generally be enough for all
purposes.
The belt c is now put in place and the cutter adjusted to the work by the
mechanism before described. By referring to Figure 13, where I have shown one
cutter thrown back, it will be seen that to accomplish this it is only necessary
to disengage the hook j from the bar M. In setting the cutter to work the hook ;
is first engaged, and the further adjustment of the cutter effected by means of the
nut i.
The wheel turns slowly and the cutter g makes a spiral cut around its
periphery. The cutter may be fed or adjusted by the nut N transversely on the
tread as the wheel revolves.
As before stated, I employ two like dressing mechanisms, one for each car-wheel,
and I have employed the same letters of reference in Figures 12 and 13 to designate
like parts of each.
I also employ two like dressing mechanisms for trueing up the axle-journals and
these are in substance the same as those for the treads, but as there is some
difference in the arrangement of the parts I will briefly describe one of them.
H' is a shaft arranged parallel to the shaft H and rotatively mounted in bearings
in the arms I. This shaft is driven through the medium of gears O, O', one fixed
on the shaft H and one on the shaft H¹. The shaft H thus becomes the driver.
L³ is a sleeve on the shaft H'; L is the arm bearing the cutter; d¹ is the
bearing for the cutter shaft; g' is the cutting or milling wheel which in this case
may be of steel and of the usual kind; K2 is the driving-sheave, and K³ the sheave
on the cutter-shaft which is coupled to the driving sheave by a bolt f; N is the
milled nut for adjusting the sleeve on the shaft, which is mounted in precisely
the same way as that before described. The mechanism for adjusting the cutter
up to the work is precisely the same as that before described, the two sections hª
and h³ of the adjusting-rod bearing the nut being coupled to the nut L³, as
shown in Figure 13.
The shafts H and H₁ are free to move lengthwise for a limited distance but
cannot move far enough to disengage the gear-wheels partly because of the
sheaves K impinging against the sleeves L, and partly because the belts c, f, f', will
tend to keep the sheaves in line. In practice the said shafts will remain in one
position or nearly so.
The fourth part of my Invention is illustrated in Figures 14, 15, 16, 17, 18,
and 19, and comprises a machine adapted for dressing the bearing-caps of the axle-
journals, and for dressing plane surfaces as well. This machine is an improvement
on that described in Figures 9, 10, 11, 12, and 13 of my Letters Patent, Number
3362, of 1878, and reference may be had to said Patent, if necessary, for a better
understanding of the present Invention.
My present Invention relates in part to the mechanism for rotating the table
bearing the work to be dressed, and the milling tool or cutter, and in part to an
auxiliary device or mechanism for planing or dressing plane surfaces.
Figure 14 is a side-elevation of the machine; Figure 15 is a plan of the same,
part of the rotary table and other superincumbent parts being removed to show the
mechanism below; Figure 16 is a front elevation; Figure 17 is a detached rear view
showing the crank; Figure 18 is a detached plan view showing the table and a
clamp for holding a bearing-cap mounted on the same; Figure 19 is a vertical
section on line 6-6, in Figure 15 enlarged.
In my Patent above referred to I have shown a milling-tool or cutter arranged
to rotate on a. vertical axis in an aperture in the center of a circular table-bed.
This bed was shown as arranged to rotate on its center around the milling-tool and.

page_text: adapted to be adjusted concentric or excentric thereto as desired, so as to dress
concave faces having varying degrees of curvature within limits.
My present Invention is adapted to accomplish the same results by means
of a differently constructed machine, and to also dress plane as well as curved
surfaces.
Let A represent a substantial bed to support the operative mechanism and Ba
curved arm fixed on the same; Cis a milling or cutting-tool rotatively mounted
on its longitudinal vertical axis in the fixed frame of the machine; D is an
adjustable bearing for the upper end of the cutter, and E is a driving pulley or
sheave fixed upon its lower end or upon a rotative bearing in which its lower end
is fixed or socketed; F is the main pulley or sheave, mounted rotatively on a stud
at the back of the machine, around which passes an endless driving belt a. This
belt passes up over guide sheaves b, b, thence down and around guide sheaves b¹, b¹;
and thence forward and around the sheave E, passing on its way forward once
around a sheave e, which will be referred to hereinafter; G is the main driving-
belt leading from a suitable counter-shaft (not shown) to the pulley F. The belt a
rests in a groove in the pulley F, and the flat belt G in pasing around said pulley
presses upon the belt a and obviates any possibility of its slipping.
H is a table mounted rotatively on a slide or sliding-bed I, mounted on a
dovetail-guide A¹ formed on bed A. The method of mounting the table rotatively
on the slide is similar to that shown in my Patent before referred to, that is to
say, it is fixed by screws or bolts to a beveled ring d, (Figure -15) which. plays in
a way or bearing formed by keepers secured to the slide I.
In the center of the table H is an opening e in and through which the cutter
rotates, and this opening is large enough to permit of considerable movement of
the table on the guide A¹. On a pendent rim of the table is formed a worm-
thread f, and on a projecting shelf J secured to or forming a part of the slide I is
rotatively mounted a worm g which is arranged to mesh with the worm-thread on
the table and rotate the latter. The worm g is not mounted directly upon the
shelf J, but has bearings in a plate which rests on said shelf. At its rear end
this plate h is pivoted or mounted, so as to swing horizontally, on a vertical arbor i
mounted rotatively in the shelf J and bearing on its upper end a bevel wheel i¹
which meshes with a bevel-wheel on the end of the worm spindle. On its lower
end below the shelf J the arbor i bears a toothed wheel i3. This wheel meshes
with a similar toothed-wheel c' fixed to the sheave c before referred to, and both
are rotatively mounted on a stud fixed in a vertical position on a swinging
bracket mounted on a stud in a provision on the shelf J. The axis of this stud
is aligned with the axis of the arbor i and is immediately below the latter. The
bracket is provided with an arm c³ which swings or plays under a slotted
flange on the shelf, and bears a clamping screw j¹ which passes through said slot
and enables the arm to be clamped to said flange. By means of this arm the
sheave may
be swung to or from the bed A of the machine, and the belt u,
which passes around it, thus slacked or tightened at will.
In the free end of the plate his formed a slot h¹ which is engaged by a pin on one
end of a lever h2 pivotally mounted at h³ on the shelf J. By means of this lever
the worm may be thrown into or out of engagement with the worm thread of the
table at will.
It will be seen that by this construction the gear-wheels and c¹ move
concentrically around the vertical arbor i, and are therefore always properly
engaged with the gear-wheels i' and ³ respectively.
K is the housing for the front edge of the table H, which is screwed or bolted
to the slide I and extends about half-way around the table. This housing forms a
support for a planer-bed L, which bears a dovetail slide L' provided with a toothed
rack K arranged to mesh with a toothed annulus or ring k₁ secured to the table H,
and arranged concentric with its axis. Rotation of the table moves the slide in
its keepers through the medium of the rack k and annulus k'. The slide L' is
provided with dovetail or undercut grooves to receive the heads of clamp-bolts.",

page_text: by means of which suitable clamps may be made to grip and firmly hold any
piece to be planed or dressed. The bed L is secured at one end to the
housing K by means of a pivotal bolt or pin n, and at the other or free end by
means of a screw-stud n' fixed in the bed and projecting downward through a
slot n² (see Figure 15) in the housing K. On the projecting pin n¹ is a wing-nut n³
whereby the bed may be clamped fast to housing. This device permits the bed
to be moved out far enough to disengage the rack k from the toothed annulus k¹.
M is a screw which passes through a fixed nut o, and is mounted rotatively in
keepers, in the housing K or slide L. By its means the slide, with its accessories
and attachments, is moved along the guide A', and the work on the table adjusted
to the cutter.
I will now describe the operation of the machine. The wheel F being set in
motion, rapid rotation is imparted to the cutter C through the belt a and sheave E.
The belt in passing around the sheave c also sets in motion the worm g through
the gear-wheels 1, 2, and 3. The worm in turn imparts a slow rotary motion to
the table H. It will be seen that when the bed I is moved along its guide A¹ it
bears the sheave c with it; but as the latter moves in a line with the belt that
drives it no derangement is caused and the sheave is rotated by the belt in one
position as well as another.
When it is desired to dress a plane surface, as of the piece m, the piece is
clamped fast on the slide L' in the proper position to be operated on by the cutter.
The bed L is moved back so as to disengage the rack on the slide, and the latter
moved to the left-hand end of the stroke. The machine is now set in motion (if
this has not already been done), and the worn thrown into engagement with the
table. The cutter being now in motion, and the table slowly revolving in the
direction of the arrow (Figure 15), the rack kis thrown into engagement by moving
in the planer-bed and clamping it fast. The piece m is now borne past the cutter
toward the right and its face dressed thereby. If it be desired to take off another
cut, the operation of shifting the slide L¹ is repeated, but it is not necessary to
stop the machine each time. The piece is fed up to the cutter by the screw M.
The cutter C may be stopped from revolving at any time by swinging in the
lever toward the bed of the machine. This throws the sheave c outward, and
alackens the bed a so much that it slips on the sheave E. The sheave c continues
to revolve, however, as the belt passes entirely around it, and the friction is
sufficient to cause rotation.
When it is desired to dress a curved surface as the lower face of the bearing-cap,
the planer-bed L with its attached parts is removed by taking out the pivotal
screw n and taking off the wing-nut n³. This leaves the bed free to be lifted off
when the entire surface of the table is left free from obstructions. A suitable
clamp N, which it will be unnecessary to describe, as it is clearly shown in my
former Patent, is fixed on the table, and the piece to be dressed fixed therein. The
table is now adjusted by means of the screw M to the proper position with respect
to the cutter C, and the machine set in motion.
In some cases it may be desirable to operate the machine by foot or hand power.
I arrange for this by providing the wheel F with a crank p, and connecting this
crank by means of a link p¹, and rope or cord p3, with a treadle o mounted at the
front of the machine. The rope p² passes over guide sheaves p³, as shown. When
the machine is to be run by hand the crank may be unscrewed, the link pl slipped
off, and the crank then screwed into the wheel F at a point q further from the
center.
I do not wish to confine myself to the precise construction and arrangement of
parts herein shown, as some departures therefrom may be made without materially
affecting the Invention.
The fifth and last part of my Invention is illustrated in Figures 20, 21, 22, 23, 24,
and 25, and comprises a machine for dressing out cylinders that have become
untrue, being primarily intended for locomotive-engine cylinders. The object is
to accomplish this without removing the cylinder from its bed or seat.

page_text: Figure 20 is a vertical mid-section of the tool taken in the plane of the line 1-1
in Figure 21, a portion of the mechanisın being shown in elevation; Figure-21 is
a plan of the tool, partly broken away, to show mechanism below; Figure 22 is a
detached sectional view taken on the line 3-3 in Figure 21; Figure 23 is a cross-
section on the line 4-4 in Figure 20; Figure 24 is a cross-section on the line 5-5
in Figure 20; Figure 25 is a detached sectional view referred to more particularly
hereinafter.
Let A represent a cylinder which is to be dressed out, as a locomotive-engine
cylinder, for example. The outer head of the cylinder has been removed, but the
inner head B, through which the piston-rod plays, is left in place. The aperture
in the head for the piston rod is shown at a.
C is a supporting frame, which in this case consists of a central boss and three
arms or branches b, b, and a platform c to support a sliding-bed & which bears the
driving mechanism of the tool. This mechanism consists in the present case of e
shaft mounted rotatively in a bearing e, and carrying a crank f and bevel-wheel a
This wheel meshes with another bevel-wheel g₁ fixed in the end of a worm h
mounted rotatively in bearings and arranged to mesh with a worm-wheel D. A
screw I mounted rotatively in keepers in the platform c engages a nut i¹ on the
slide d, and serves to move the latter in and out a limited distance, whereby the
worm is thrown into or out of engagement with the worm-wheel. The slide may.
be mounted on a dovetail keeper on the platform in the usual way to keep it in
line and guide its movements.
The arms b of the frame C are provided with guides ; seated in keepers 7 on
legs or standards E. These legs rest upon the flange of the cylinder A, and are
secured by bolts which pass through flanged feet of the legs and the bolt holes in
the cylinder flange. Other means of fastening them may however be employed
as, for example, with clamps.
In the arms bare rotatively mounted in keepers adjusting-screws k, k, arranged
to engage nuts 1, 1, fixed to or forming parts of the legs E. The function of these
screws is to enable the axis of the bore in the central boss of the frame C to be
adjusted in the axis of the cylinder.
Fitting snugly in the central bore of the frame C is a tube or tubular-shaft F,
which has a longitudinal groove or grooves m in its outer face, and on this shaft
is mounted the worm-wheel D. This latter is not fixed to the shaft, but has
splines or internal projections m¹ which engage the grooves m. It is kept down
to its seat in or on the frame C by means of keepers m².
The shaft F is internally screw-threaded near its lower end to engage a male-
screw on an axial spindle G which passes through said tubular shaft, and has a
bearing on the bead B of the cylinder. The superior portion n of this spindle is
square or polygonal, and fits in a correspondingly-shaped opening in a cap o secured
to the top of a tube or cylinder H, where it is secured adjustably by means of a
set screw o. The tube H is made to slip over and fit onto the shaft F.
On the lower end of the tube H is formed a cup-like flange p, which takes over
the boss of the worm-wheel D, and the projecting margin of this flange takes under
keepers p' fixed to the said worm-wheel. Attached to and forming a part of this
flange is a hand wheel I, on the underside of which is formed a pendent clamping-
flange q. Referring to Figures 21 and 22, wherein the clamping-device is best
shown, is an arm fixed on the bed d, which has a jaw that takes under and
behind the flange q, and 3 is a sliding jaw mounted on the fixed-arm, which engages
the outer-face of said flange. A pin has a bearing in the arm and an
eccentric on said pin fits an aperture in the sliding-jaw, whereby when the.
piu is turned the sliding-jaw is caused to press against the flange q. and hold the
hand-wheel I fast. When the sliding-bed d is moved in so as to effect the.
engagement of the worm with the worm-wheel, the jaw 1 stands off from the
clamping-flauge q, and the sliding-jaw is in position to be forced against the said
flange, but when the bed d is moved out so as to disengage the worm from the
worin-wheel, the jaw r¹ may be made to forcibly engage the flange g on the inside,

page_text: and thus hold the wheel I fast by frictional contact while the worm-wheel and its
detached parts are or may be rotated. Thus it will be seen that the jaws r¹ and ³
are not intended to act together in clamping the flange, although both may be made
to do so when the worm is disengaged.
So far as described the operation is as follows:-Rotation of the worm h imparts
rotation to the tubular shaft F through the worm-wheel D. If the spindle G be
free to turn it will also rotate with the said shaft, but if the wheel I be clamped
fast the spindle G will be prevented from rotating and the shaft F will move
longitudinally up or down according to the direction of its rotation.
On the lower end of the shaft F is fixed a plate J, which bears the milling or
cutting-wheel and its train of gears, and on the screw-spindle G is mounted an
internal gear-wheel K. This wheel is not fixed on the said spindle, but has an
internal spline or splines s arranged to engage a longitudinal groove or grooves 81
formed in said spindle G. The boss of the wheel K is kept up to underside of the
plate J by means of keepers 82. It will be seen that this construction compels the
wheel K to follow the vertical movements of the shaft F and the rotative
movements of the spindle G. Referring to Figure 25, which is a vertical
mid-section of the device for engaging and disengaging the train of gears which
actuate the cutter, t is a pinion adapted to nesh with the wheel K and mounted
fixedly on an arbor t¹. The upper portion of this arbor is reduced in diameter and
is rotatively mounted in an externally screw-threaded sleeve t³, being provided with
a stop-nut or its equivalent at its upper end. The sleeve t rests upon a shoulder
or collar on the arbor and is kept in place thereon by the stop-nut. The male
screw on the sleeve engages a female screw in a fixed-socket t. Besides its bearing
in the sleeve the arbor may also have a bearing in the plate J to further brace and
steady it. Rotation of the sleeve moves the pinion t up or down and into or out
of mesh with the wheel K.
On the arbor t above the pinion, and preferably made in one piece with it, is a
larger toothed wheel u, which meshes with a long pinion v mounted rotatively on
an arbor or stud v¹ fixed in the plate J. This arbor projects upwards through said
plate and forms an axis or pivot on which is mounted a swinging plate L, and on
the stud v is mounted a larger toothed wheel v³, which drives through intermediate
gear-wheels w and w¹a pinion x mounted on the arbor or stud x¹ of the milling or
cutting-wheel M. The studs of the wheels w, w¹, and the cutter have fixed
bearings in the plate L, the bearing for the cutter stud being especially long, so
that it may be very firm. The pinion x is fixed to the cutter and they both rotate
on the fixed stud x'.
· The wheel M possesses no novel features, but it may be well to say that it has
cutting teeth at y on its lower face as well as on its periphery.
It is obvious that the distance measured radially of the milling-wheel from the
axial spindle G should be capable of variation at will to suit the tool to cylinders
of different diameters, and this variability should be available without the necessity
of changing the gear-wheels of the train. To provide for this variable adjustment
I have mounted the plate L, as before stated, pivotally on the prolongation of the
arbor or stud v', so that when said plate L is swung on said stud the pinion w will
move concentrically around the wheel v³, keeping always in mesh.
The cutter may be thus moved to or from the axis of the tool, as will be readily
understood by inspection of Figure 21, where the movement of the plate L is
illustrated by dotted lines. To move the plate L and adjust the cutter to or from
the tool-axis, I prefer to employ a pinion & mounted rotatively on a stud z¹ fixed in
the plate J, and arranged to mesh with a rack L' curved concentric to the pivotal
stud, and attached to or forming part of the plate L. Rotation of the pinion z
will move the plate L on its pivot in a well-known way, and this movement may
be effected by means of a milled flange z formed with or attached to the pinion.
When the proper adjustment is effected a lock-nut may be run down upon the
pinion to hold it in place; or the rack L may be clamped down on the plate J
independently of the pinion.

page_text: Having thus described the construction of the machine or tool, I will now
describe its operation as applied to dressing out the cylinder of a locomotive-
engine.
The outer head of the cylinder is removed and the piston and piston-rod taken
out. The tool is set on the flange at the open end of the cylinder, and bolted or
otherwise securely clamped thereon. The axial spindle G is now brought precisely
into the axis of the cylinder by means of the adjusting-screws k, k, the said
spindle G passing through the hole a in the fixed head B and finding a bearing
therein. Should it not fit snugly it is best to provide a bushing of some sort, so
that the end of the spindle may be properly steadied.
Care being first taken to see that the wheel I is unclamped, the worm-wheel D
in proper mesh with the worm h, and the pinion t disengaged (by lifting) from the
wheel K, the operative rotates the axial spindle G in the proper direction by means
of the hand wheel I, whereby the shaft F (which cannot turn by reason of the
enagement of the worm-wheel and worm) is moved up or down, bearing the wheel K
and the plate J carrying the cutting mechanism.
Having thus moved the milling-wheel until it stands just above the level of the
top of the cylinder A, he next adjusts it radially until it is far enough from the
center to cut into the cylinder to the proper depth, clamps fast the pinion and
wheel I, and lowers the pinion t until it is properly in mesh with the wheel K.
The tool is now ready for operation. Rotation is now communicated to the
worn-wheel D by the driving-mechanism, and this communicates rotation to the
tubular shaft F around the fixed axial spindle G. The screw thread on this spindle:
serves to feed the said shaft and its attached dressing mechanism downward,
whereby the milling-wheel is caused to move in a spiral or progressive orbit. The
wheel K being non-rotative, as before described, communicates a rotary motion to
the pinion t, and this notion, multiplied by the intermediate train of gears, is
communicated to the milling-wheel, whereby it is rotated rapidly on its axis. It
will thus be seen that the milling wheel has three movements, a rapid rotary motion
on its axis, a slow motion in a direction parallel to its axis, and a slow motion
around and concentric to the axis of the tool.
The operation just described may be continued until the cutter has traversed the
entire length of the cylinder and dressed its entire inner face.
As the pitch of the feeding screw on the spindle G does not equal the width of
the face of the milling wheel, it is obvious that no part of the surface will escape
dressing, unless indeed there should be an unusual depression at some point which
has been overlooked, when a second dressing may be required. By making the
pitch of the feed-screw twice as great as the width of the cutter face a female screw
may be cut with this tool, and this may be desirable in some cases where a cylinder
is very large.
I wish it understood that I do not confine myself to the precise construction of
the tool as herein shown, as various modifications and substitutions will readily
suggest themselves to a skilled workman.
My improved dressing tool may be applied to dressing cylinders for all purposes,
new as well as old, and is not confined to cylinders of locomotive-engines, although
specially applicable to that purpose.
Having thus described my Invention I claim,--
1. A truck for a car pivoted to the car-body at its end, whereby the wheels of
the truck are all placed on the same side of the pivoting point, substantially as get
forth.
2. A truck for a car pivoted at its end to the car-body, and arranged to swing
under the body of the latter, and provided with bearing rollers arranged to run on
tracks or ways on the bottom of the car, substantially as and for the purposes set
forth.
3. A car-body mounted on a truck-frame and arranged to rest at four points upon
the same, so as to be incapable of rocking, and pivoted to the end of said truck-fraine,
substantially as and for the purposes set forth.

page_text: 4. A truck for a car pivoted at its end to the end of the car-body, and arranged
to swing under the body of the car, substantially as set forth.
5. The springs on one side of a car-truck dependently connected, substantially
as set forth, whereby pressure is equally divided between the two springs on one
side.
6. A car-truck provided with eveners on each side to which the springs are
secured, the truck frame being mounted on the centers of the eveners, and the ends
of the springs being arranged to rest upon the axle-boxes, substantially as and for
the purposes set forth.
7. The combination with the truck-frame of the housings fixed to the same, the
eveners upon which the housings are mounted, the springs secured to the eveners,
and the axle-boxes and their saddles upon which the springs rest, all constructed and
arranged to operate substantially as set forth.
8. The evener provided with sockets to receive the springs, and provided with a
Bocket at the center to receive a ball on the housing or truck-frame, all constructed
substantially as set forth.
9. The combination with the truck-frame of the housings provided with side-
plates g and recesses for the axle-boxes, the evener G, springs H secured thereto, the
axle-boxes and their saddles, all arranged substantially as set forth.
10. In a car-truck the evener provided with sockets to receive the springs and
with cams p, substantially as set forth.
11. The stirrup-strap, consisting of stretcher I and straps I', constructed and
arranged to be attached substantially as set forth and shown in Figures 1 to 5.
12: The saddle for an axle-box provided with a round or convex seat for the
spring, substantially as and for the purposes set forth.
13. The saddle provided with a rounded seat for the spring arranged between
raised guard-flanges which have short laterally projecting flanges to receive the clip,
in combination with the said clip arranged to engage the lateral flanges, substantially
as shown.
14. The dust-excluding half-collar mounted in the inner end of the housing and
upheld elastically by a spring, substantially as set forth.
15. The dust-excluding half-collar mounted in the inner end of the housing and
elastically upheld, as shown, the said collar having a projecting-lip and oblique
scraping-edges for removing the surplus oil from the journal, substantially as set
forth.
16. The combination with the housing of the axle-box of the half-collar E and
its supporting spring, the washer-collar H, and the slide or cap I, all arranged to
operate substantially as set forth.
17. The bearing-cap provided with the serpentine oil-cliannel in its concave face,
said channel being arranged to receive oil from the pump at the inner end of the
bearing, as set forth, and shown in Figures 6, 7, and 10.
18. The combination with the housing provided with suitable bearings therefor,
of the bearing-cap provided with a projection or stud at its inner end, and the
slide I provided with a suitable provision to engage said stud, substantially as and
for the purposes set forth, and as shown in Figure 6.
19. The oil-pump arranged to slide into a recess in the door of the box, and
provided with a spring at its back to engage a shoulder on the said door, in combi-
nation with a door provided with a recess to receive the pump, a shoulder to
engage the spring on the same, and an aperture near said shoulder through which
the spring may be released from said shoulder, substantially as set forth and as
shown in Figures 6 and 8.
20. The combination of the housing constructed to receive the door, the said
door provided with marginal flanges to take over the margin of the opening in the
housing with a recess and keepers to receive the oil-pump, a shoulder to engage
the spring on the pump, and an aperture through which the disengagement of the
spring is effected, and the oil-pump provided with a projecting part to take under

page_text: the roof of the housing, and a spring on its back to engage a shoulder on the door,
all arranged to operate substantially as set forth.
21. The combination with the stopping-bar of the plate jattached removably
thereto, substantially as and for the purposes set forth and as shown in Figures 6
to 9.
22. In combination with the pump-chamber and the outer valve-chamber
arranged to slip over its lower end, of the stopping-bar made to embrace the body
of the pump-chamber and provided with a flange to take under a projecting
portion of the valve-chamber and prevent it from escaping, substantially as set
forth and as shown in Figures 6, 8, and 9.
23. The combination with the housing having a ball support for the saddle, of
the saddle B provided with a socket to rest on the said ball support, a rounded
convex seat for the spring C, two raised guards a, a, and two short lateral flanges
b, b, on the guards a, and a clip D having curved ends to engage the flanges b, b,
all arranged to operate substantially as set forth and as shown in Figs. 6 and 7.
24. A machine for dressing the treads of car-wheels and the journals of the
axles simultaneously or independently, substantially as shown in Figures 12
and 13.
25. A machine for dressing curved or plane surfaces comprising a stationary bed
on which are rotatively mounted a driving-pulley and a cutter for dressing the
work, said cutter being driven by a belt from said pulley, and an annular table to
support the work to be dressed rotatively mounted on a sliding-bed mounted on
the fixed bed, said table being rotated by means of a pulley on said sliding-bed
around which the driving belt passes on its way from the driving-pulley to the
cutter, all arranged to operate substantially as shown in Figures 14 to 19.
26. The combination with the rotatively-mounted cutter of the sliding-bed, the
annular table mounted rotatively thereon and provided with a toothed annulus
arranged concentric with its axis, of the planer bed, the planer slide mounted
thereon and provided with a toothed rack, and mechanism for communicating
rotary motion to the cutter and table, all constructed and arranged substantially as
shown in Figures 14 to 19.
27. The combination with the bed of the machine, of the cutter mounted
rotatively therein, the sliding-bed bearing the table and mechanism for rotating
the table, of the main grooved pulley F, guide-sheaves b¹, b', sheaves c and E, and
belt a, all constructed and arranged substantially as shown in Figures 14 to 19.
28. The combination with the grooved driving-pulley F and the belt a arranged
to engage said pulley, of the flat belt G arranged to take over said belt a and
pulley F, substantially as shown in Figure 17.
29. The combination with the sliding-bed, the table mounted rotatively thereon
and provided with a worm-thread, of the worm mounted in bearings on a plate
which is pivotally mounted on the arbor of the gear which drives the worm, the
said arbor and gear and a clamping mechanism for fixing the said bearing plate in
position whereby the worm may be engaged with and disengaged from the worm-
thread on the table, substantially as set forth and shown in Figures 14 to 19.
30. The combination with the annular table provided with annulus K' and
rotatively mounted on a sliding bed of the fixed housing K means for adjusting
the sliding-bed, the planer-bed mounted adjustably on the housing K, and the
planer-side mounted on the planer-bed, and provided with a rack k, all arranged
substantially as set forth and shown in Figures 15 and 16.
31. The combination with the bed for supporting the operative mechanism of the
cutter mounted rotatively therein, the driving-pulley and the driving belt of the
sheave c and sliding-bed bearing said sheave, and arranged to move on its seat in
a plane parallel with the driving-belt, whereby the adjustment of said bed is
prevented from disarranging the said belt, substantially as set forth and as shown
in Figures 14 to 19.
32. A tool for dressing cylinders comprising a bearing-frame to be secured to the
cylinder, a milling-wheel to be rotated on its axis and to be caused to traverse the

page_text: interior of the cylinder in a spiral orbit, and mechanism substantially as described
mounted on said fixed frame and arranged to impart the proper movement to said
cutter as set forth..
33. A tool for. dressing cylinders, comprising a frame to support the mechanism,
a fixed axial screw, a tubular shaft mounted rotatively in the frame and bearing a
nut which screws onto the axial-screw, a milling-wheel or cutter mounted on
an arm fixed to the tubular-shaft, a toothed wheel mounted on the axial screw
and arranged to slide longitudinally thereon, a pinion mounted on the cutter-bearing
arm and arranged to mesh with the sliding toothed wheel on the axial screw, and
a train of gears arranged between said pinion and the milling-wheel, whereby the
latter is rotated, all combined and arranged substantially as set forth.
34. A tool for dressing cylinders comprising a frame to support the mechanism,
a tubular-shaft F mounted rotatively in said frame, an axial screw-spindle G
capable of being clamped fast to the frame, and having a male screw to engage a
female screw in the shaft F, a cutter M, a pinion t, and an intermediate train of
gears mounted on an arm or plate on the shaft F, and a toothed wheel K mounted
to slide on the axial spindle and to mesh with the pinion t, whereby rotation of
the shaft F imparts axial rotation to the milling-wheel and causes it to move in a
spiral orbit, all constructed and arranged substantially as set forth and as shown in
Figures 20 to 25.
35. The combination with the supporting legs of the frame and the adjusting-
screws mounted rotatively therein of the frame provided with guides arranged to
slide in keepers on the supporting legs, and provided with nuts to engage the
adjusting-screws on said legs whereby the axis of the frame may be properly
adjusted to the axis of the cylinder, substantially as set forth and as shown in
Figures 20 and 21.
36. The milling wheel mounted rotatively on a plate or arm mounted on and
arranged to turn on the same axis with the driving gear wheel v³, the said wheel
mounted on an arm or plate fixed to the shaft F, the wheel K, and the intermediate
train of gears, all combined and arranged to operate substantially as set forth and
as shown in Figures 20 and 21.
37. The combination with the plate J of the plate L mounted thereon and
provided with a curved rack L' and the pinion z, all arranged to operate substan
tially as set forth and as shown in Figure 21.
38. The combination of the pinion t, arbor t¹, screw-threaded sleeve t*, mounted
rotatively between keepers on said arbor, and the socket t, all constructed and
arranged to operate substantially as set forth and as shown in Figures 20 and 25.
In witness whereof, I, the said Joseph Nottingham Smith, have hereunto
set my hand and seal, this Fourteenth day of November, A.D. 1881.