Improvements in Cold Tire Setting Machines.
Year: 1897

page_text: Date of Application, 6th July, 1897-Accepted, 12th Mar., 1898
COMPLETE SPECIFICATION.
Improvements in Cold Tire Setting Machines.
I, EDWARD NEWTON ZELLER, of Portland, in the County of Multinomah, and
State of Oregon, United States of America, Gentleman, 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:-
-
My invention relates to a machine for setting tires when cold by pressure applied
to the outer face thereof, at all points simultaneously, and in such a manner as to
cause the same to shrink and assume a smaller diameter to become firmly set upon
the wheel felly.
With various objects in view, which will hereinafter be referred to, the in-
vention consists in a cold tire setting or shrinking machine embodying the peculiar
combination of parts such as will be first described in detail and then be specifically
pointed out in the appended claims.
In the drawings
T
Fig. 1 is a perspective view of the simplest form of my invention, showing the
same as applied for use.
Fig. 2 is a top plan view of the same, parts being omitted to more clearly
illustrate the same, the toggle and shifting devices being at their outer or normal
position.
Fig. 3 is a detail plan of the several toggle-members, their presser blocks and
the supplemental or filling blocks hereinafter referred to.
Fig. 4 illustrates a modified arrangement of the toggle operating means.
Fig. 5 is a section, and Fig. 6 a plan of a further inodification thereof.
Fig. 7 is a detail side view of one of the toggle arms and the supplemental
guides for the detachable filling blocks.
Fig. 8 illustrates the several different sized filling blocks.
Fig. 9 is a longitudinal section of one of the compound hydraulic cylinders
and pistons.
Fig. 10 is a transverse section thereof.
Fig. 11 is a plan view and
Fig. 12 is a side view of a double acting pump mechanism employed for
operating the several pistons.
Fig. 13 is a diagrammatic view illustrating the arrangement of the feed and
discharge pipes, their connections with the cylinders, the triple valve and the
valve operating devices.
Fig. 14 is a detail view of a portion of such fluid pipes and their valve
connections.
Figs. 15, 16 and 17 are detail sections taken on the lines 15,-16,-17
respectively in Fig. 2.

page_text: In its simplest form, my invention embodies a suitable bed plate A, of cast metal,
which may be of two or more sections joined by bolts to facilitate the shipping
thereof. The bed plate A has a central opening a, for the reception
of the wheel hub, and a series of radial grooves B, which extend
from the opening
flange a¹
an
to
a,
annular
guide for the friction rollers a³
which forms
which
serve
the
to
internal bearing or
facilitate the movement of the toggles. In Fig. 2 it will be seen the radial
grooves B have enlarged outer portions b, which terminate in narrow grooves
having undercut or dovetail portions be for a purpose presently described.
b₁
C indicates a series of presser blocks, see Fig. 7 each of which has a socket_c,
and a dovetail, tongue on its outer face adapted to fit the dovetail groove b¹,
they also having a pendent lug e, the purpose of which will presently appear.
D indicates a cast iron rim held to turn on the depressed annulus of the bed plate,
which rim has a series of (preferably thirty six as shown) sockets d, to receive
the outer pivotal ends f, of toggle arms or levers the opposite ends f¹ of which
seat in the sockets a, of the blocks C as shown.
The rim I, turns on the bed plate, and to give it the required strength and
rigidity, it is re-enforced by a number, preferably three, steel bands E, E¹, E²,
shrunk on, so as to add strength to the rim sufficient to enable it to withstand any
strain from within.
To provide for an easy, movement of the rim. D on the plate. A, such plate has
a series of pockets a having friction rollers a(see Figs. 2 and 5). When the
several parts are joined in the manner shown, their relative arrangement is such
that when at their normal or extended position, the toggle levers will be disposed
at a slight tangent to the tire or wheel rim and not radially thereto, as are the
blocks C, such arrangement providing for a powerful and positive plunging or
-presser action of the blocks on the wheel rim when such rim is turned in the
manner presently described to straighten the toggles, and thereby force the blocks
radially inward.
As all the blocks C, the toggles and the rim have a uniform connection and as
the blocks are guided to move radially inward, it follows that any rotary move-
ment of the rim D will force the blocks simultaneously inward to bear upon the
wheel tire, and while the said blocks are thus moved radially inward, the tangent
pressure exerted thereon by the toggle members will impart, a, creeping or side-
wise strain thereon and thereby cause the tire to shrink or upset in a more positive
and uniform manner to grip the felly, such operation effecting a quicker shrinking
action on the tire than can be obtained by imparting a direct radial, action on the
blocks C.
Instead of providing the rim D with a series of sockets d, to receive the outer
ends of the toggles, it may have a series of integral cam ways & having slide
ways d³, to receive the head socket blocks d, in which the outer ends of the toggles
are adapted to fit as shown in Fig. 4, in which the toggles at, the right are shown
in their normal position .e., drawn outward while the one at the left, is shown
at its inner position, when forced up by the movement of the rim D in the direction
indicated by the arrow.
In Figs. 5 and 6 is shown a further imodification of the rim and the means for
joining the toggles thereto. In this structure the rim has a series of circular
wedges or blocks 5 having sockets d arranged eccentrically, such blocks being
held in semi-circular seats in the rim D and connected by the plates d so that
when the rim D is turned; the several blocks 5 will be turned in their seats to
force the toggles. out.
To provide for the use of my machine for different sized wheels having a diameter
less than the diameter of the annular presser rim formed by the
blocks C, supplemental presser blocks L, are provided which in
practice are of different sizes, ranging from 1 to 4 inches in width. These, blocks,
several of which are shown in Figs. 2 and 3, have dovetails adapted to fit in dove:

page_text: tail grooves in the supplemental guides. M which. fit the grooves B,
see Fig. 2 and which have transverse sockets m. to
receive
the
pendent studs on the head blocks, whereby the said blocks M are moved with
the blocks C. These supplemental blocks are used for different sized. wheels, i.e.
the first size block is 1 inch, the second 2 inches, and the third block 4 inches wide,
all of such blocks being used either singly or in combination to obtain the required
impact bearing surface on the wheel rim.
To provide a powerful and positive means for operating the toggles in unison
and with a uniform pressure at all points, a duplicate set of hydraulically
operated pistons arranged at diametrically opposite sides of the main frame are
provided, which are so disposed relatively to operate together and in reverse.
directions, whereby they will serve to move the annular band; or cam rim to an
apply position. The hydraulically operated pistons are in the nature of compound
pistons the construction thereof being clearly shown in Fig. 9 by reference to
which it will be seen the same consists of a main cylinder H preferably of eight
inches bore, and twelve inches deep, bolted fast to the bed plate and a small
cylider H having a three inch bore, such cylinder being in the nature of a
guide for one end of the piston J, it. being also. employed to receive the fluid
pressure. for reversing the piston, which in practice has a six-inch (more or less).
movement, as the character of the work to be done may make necessary.
To facilitate the connecting and disconnection of the several parts constituting
the piston, without disarranging the fluid pipes presently referred to, the said.
piston is formed of three sections, a head, which works in the large cylinder
provided with a rod portion j¹ having a bifurcated end 2 apertured as. at j, a
second head which operates. in the small cylinder H which also has a rod
terminating in an apertured shank adapted to fit the bifurcated end of the rod j³,
and a strong steel pin which joins the two rod sections of the piston and which
forms the pull pin for a pair of clevises or links N, such links N being also con-
nected to the pull pins O, Ö, which pass down through the thickened portions of the
rim D at diametrically opposite points thereof.
The pistons at one side are flattened so that when pressure is on, they will bear
against the outer band of the rim and in a measure overcome some of the strain
thereon. Each piston has a suitable packing as shown.
At the points where the hydraulic cylinders are set, the bed plate is depressed
as at a8 (see Fig. 2) to permit of a free movement of the link or clevis members
herein before referred to. In the simplest form, a single pump operated means (see
Fig. 1) may be used for forcing the fluid under pressure to the cylinders and'
drawing off the same. I prefer however to employ a double pump mechanism,
such as for example as shown in Figs. 11 and 12, such mechanism having a large
pump for feeding the fluid into the large cylinders and a smaller pump for forcing.
the fluid into the small cylinders, the suction pipes PP of such pumps. being
connected respectively with the feed pipes Q Q one of which, Q; connects with the
large cylinders H, while the other Q, connects with the small cylinders H¹, the said
pipes having each a triple reversing valve mechanism R, R, and waste pipes S, S,
the construction of which is best shown in Figs. 13 and 14 such valves R, R, being
joined by link members T, T, with a single operating lever.U.
In practice, the feed valves have suitable check valves.
The manner in which my invention is operated, is best explained as follows:
After the wheel is set in place and held in any approved manner, and the tire
loosely slipped thereon, the several blocks and toggles are set to their normal
position. Power is then applied by operating the large pump to force the fluid
under pressure into the large cylinders, the several valves being so set, that at this
time the fluid in the small cylinders will be drawn out through the pipe connected
therewith, through the valve and out of the escape section into a suitable collecting
pan W (see Fig. 1) with which the pump connects. until the piston has been
forced out the required distance. The hand lever is then adjusted to reverse the
piston- and the several valves in the fluid pipes, and the small pump operated¹ to

page_text: force the fluid into the small cylinders, and allow for the escape of the fluid from
the large cylinders which will cause the piston, the rim D, the toggles and the
presser blocks to assume their normal position.
While I have shown and described my invention as adapted for shrinking wagon
wheel tires, it is obvious that the same can be used for setting the tires of other
wheels such as locomotive engine wheels, which can be accomplished by making the
machine larger and more powerful.
While I have shown hydraulic pump devices for operating the rim D, it is
manifest other means may be used for such purpose. Furthermore, changes and
modifications of the several parts may be made without departing from my
invention.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
:-
1. A cold tire setting machine, comprising a bed plate, a series of radially
movable presser blocks, an annular rim movable on the bed plate, a series of
toggle arms connecting the rim and the presser members, and a fluid pressure
mechanism for imparting a partial direct rotation to the rim, substantially as
shown and described...
2. In a tire setter mechanism, the combination with the bed plate, the radially
movable pressers, the toggle members connected thereto, a rotatable rim for moving
the toggles simultaneously and a fluid pressure means for operating the rim as
set forth..
3. The combination of the bed frame having a central opening, presser blocks
movable on said frame, the rotatable rim, the re-enforce bands held thereon the
toggles pivotally connected to the rim and the presser blocks, the pistons and the
link members, all substantially as shown and described.
4. The combination with the bed plate having. radial guide grooves, the presser
blocks, the toggles and the movable rim, of the cylinders HH', the pistons formed
of sections, the link arms, and the fluid pressure mechanism, as set forth.
5. A tire setting machine comprising a bed plate radially movable presser
blocks, a rim having a limited rotation on the bed plate and having a series of
cams, one for each presser block, arms held to bear at one end against the presser
blocks and at the other against the cams, said arms being normally held at a
tangent to the rim and means for moving the rim, substantially as shown and
described.
6. The combination with the bed frame, the presser blocks, the toggles- and the
movable rim, of the cylinders H H', the piston having one side flattened and the
fluid pressure mechanism, all being arranged as shown and described.
7. In a machine as described, the combination with the pressers, and means
for forcing them simultaneously inward, of the cylinders, the pistons, the link
arms, and the double acting pump mechanism having reversing valve lever devices,
and suitable connections with the cylinders, as specified.
8. In a tire setting machine, the combination with the bed plate having radial
grooves, presser blocks movable therein, an annular rim, movable on the bed plate,
toggles pivotally connected to the rim and the blocks, the fluid pressure devices
and the supplemental blocks L, substantially as shown.
9. The combination with the frame, the presser blocks, means for forcing the
blocks inward, supplemental presser blocks detachably held in front of the movable
presser blocks, as specified.
10. The combination with the frame having grooves, the main presser blocks,
the supplemental guides and the supplemental presser blocks.
11. The combination of the bed plate, the presser blocks, an annular rim movable
in a circle about the presser blocks, said rim having a series of cam seats, guides
movable thereon, the toggles, and means for rotating the rim as specified.
12. The bed plate having a central opening a series of presser blocks radially

page_text: movable toward the opening, a rotatable rim, means for partially rotating the same
and connections operated by the rim to move the presser blocks as specified.
Dated this 6th day of July 1897.
BOULT & WADE,
Agents for the Applicant.