Improvements in the Manufacture of Tires.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of Tires.
I PETER GENDRON, of No. 1413 Walmut Street in the City of Toledo, County of
Lucas, and State of Ohio, United States of America, Manufacturer, do hereby declare
the nature of my invention for THE MANUFACTURE OF TIRES, 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 new and useful improvements in the manufacture of
tires, and the invention consists in the peculiar method and machinery in manu-
facturing tires, whereby the expense of manufacture is lessened and a more perfect
article is produced than heretofore.
In the drawings which accompany this Specification,
Fig. 1 is a plan view of my improved machine, showing the parts ready to begin
operations.
Fig. 2 is a plan view showing the parts in operation,
Fig. 3 is a side elevation of the operating parts, looking from the right-hand side.
Fig. 4 is an elevation of the operating parts, looking from the left-hand side.
Fig. 5 is a vertical central section through the trueing-roll, partly in elevation.
Fig. 6 is a cross section on line x x in Fig. 1.
Fig. 7 is a cross section on line y y in Fig. 6, partly in elevation.
Fig. 8 is a cross section on line in Fig. 1.
Fig. 9 is a sectional detail of the friction clutch.
1 is the main frame for supporting the parts, 2 is the main drive shaft journaled
therein in suitable bearings and having suitable drive pulleys 3 connected to any
source of power by means of belting.
To the front end of this shaft is detachably secured a trueing-head 4; this head
is tapering at its forward end, and of cylindrical shape in the rear of the tapered
portion, the forward end of the trueing-head being of smaller diameter than the
diameter of the tire to be trued, and the cylindrical portion being of larger diameter
than the diameter of the tire.
5 is a feed-table slidingly secured in the upwardly extending arm 6 of the main
frame, and is moved to and from the trueing-head by means of the feed-lever 7
pivoted to the bracket 8 on the frame, and connected to the feed-table 5 by the
connecting-link 9.
10 is a tilting tire-holder pivoted to the top of the sliding feed-table by means of
the transverse shaft 11: this tire-holder has suitable adjustable arms 12 having the
upturned ends adapted to receive and hold the tire, and is also provided with a
downwardly projecting crank-arm 13 having a pin engaging into a segmental circular
slot 14, all so arranged that the forward movement of the feed-lever moves the feed-
table and tilts the tire-holder from the horizontal to the vertical position while
advancing it to the trueing-head, to engage the tire thereon, the reverse motion
bringing it back to the position shown in Fig. 1.
15 is an arm of the lever 7 connecting by an adjustable connecting-link 16 to the
crank 17 of the rock-shaft 13 journaled in a suitable frame, and provided at its other
end with a delivery arm 19 extending in front of the trueing-head, and having a
hooked end 20 just below the top of the head, all so arranged that the movement of
the feed-lever 7 will raise and lower the arm 19 in front of the trueing head.
21 and 22 are transverse adjustable bed-plates slidingly secured upon the transverse
guides 100 of the main-frame and adjustable to and from each other by means of the
shaft 23 having right and left hand screw-threads engaging into screw threaded nuts
on the under side of the bed-plates.
24 is a handle arranged in convenient proximity to the operator for turning the
shaft to adjust these bed-plates.

page_text: 25 and 26 are longitudinally sliding carriages carried by the bed-plates 21 and 22
respectively these carriages are operated by'a feed device which consists of the
rack-bars 27 arranged on the under side thereof, with which the gear-pinions 28
engage. These gear-pinions are slidingly secured upon the shaft 29 which is provided
with the key-way 101, in which a feather on the gear engages. Motion is imparted
to the shaft 29 from the worm-screw 30 on the feed-shaft 31, which meshes with the
worm-gear wheel 32, a suitable pulley 33 being secured upon the shaft to receive the
belt from any suitable source of power. The worm-gear wheel 32 is loosely sleeved
upon the shaft 29, and is thrown into and out of engagement with the shaft by means
of a suitable friction-clutch 103 slidingly secured upon the shaft, operated by means
of the hand-lever 35.
Upon the sliding carriages are secured the adjustable base-plates 36 on which are
mounted the swinging roller-heads 37 and 38 journaled upon the vertical pivots 39:
upon these heads are journaled the front trucing-rolls 40 and 41 upon suitable
transverse shafts. Each of the swinging roller heads is engaged by a spring-dog 42,
one end of which is secured to the stationary bed-plates 25 and 26 by means of the
standard 43: the other end has an enlarged head 44 engaging into a corresponding
notch in the periphery of the roller-heads, and which, when the carriage is moved
forward towards the work, rotates the head against the tension of the spring-dogs to
bring the rolls into their proper position for working, as shown in Fig. 2, the reverse
movement rotating them to the position shown in Fig. 1.
45 are abutments on the roller-heads which strike the stops 96 to limit the rotary
motion of the roller-heads, the stops being provided with suitable abutments.
The sliding carriage 25 has a rearward extension upon which is mounted the
transverse sliding carriage 48, which carries the rear roll 46 and the side roll 47.
The carriage 48 is operated by means of a screw 49 having the pinion 50 meshing
with the gear-wheel 51 having a suitable handle 52, as plainly shown in Fig. 6.
The rear roll 46 is journaled in a swinging head 53 which is pivotally secured at 97
upon the base-plate 61, which is longitudinally adjustably secured upon the bed-
plate 98 by means of the adjusting-screw 62, and the bed-plate 98 is transversely-
adjustably secured upon the transverse sliding carriage 48 by means of the bolt 99.
The swinging head 53 is held normally away from the trueing-head by the spring 54,
and it is thrown into operation with the roll 46 against the trueing-head by means of
the lever 55 pivoted to the side of the base-plate 61, the upper arm of which bears on
an incline of the spring 56, which latter bears against the side of the swinging head.
This lever 55 is connected at its lower end to the rod 57, which is provided with the
stop 58 adapted to strike against the fixed abutment 59 in the forward movement of
the carriage, thus forcing the upper end of the lever against the incline on the spring,
thereby crowding the rear roll 46 against the trueing-head: while the stop 60 on the
rod 57 in the rearward movement of the carriage will carry the lever back to its
initial position, when the tension of the spring 54 will bring the roll into the position
in Fig. 1.
The side or expanding roll 47 is provided with a face of suitable shape to bear
against the side of the tire which is to be rolled.
63 is a transverse guide of the main-frame upon which is secured the adjustable
bed-plate 64 by means of the set-screw 65.
66 is a longitudinally sliding table adjusted at its forward end by means of the
screw-bolt 67 and held in contact with such bolt by means of the U-shaped spring 68,
the tension of the spring 68 acting against the forward end of the carriage 66.
Pivotally secured upon the table 66 by means of the bolt 70 is the swinghead 71
which carries the rear trueing roll 72, forming the companion roll for the front trueing
roll 41. The rear trueing roll 72 is held against the trueing head 4 by the tension of
the spring 73 secured at one end to the table 66 and at the other end bearing against
the swinging head 71.
74 is a hook secured upon the swinging head 71, and projecting some distance
therefrom: it is adapted to be engaged by the hook 75 secured at the side of the

page_text: The side or expanding roll is shaped so as to bear harder on the larger side of the
tire while expanding it and by this means it takes the dish out and the tire is made
true.
The result of the operation of my machine in the manufacture of a tire is to cause
such tire to assume a perfect circular form without tension or strain, rolling the front
and rear edges of the tire in exact parallelism.
The effect of the side roller is to slightly expand the tire compressing the fibre and
thereby increasing the strength.
I
It will thus be seen that I take a circular band of slightly less diameter than
the finished tire and expand it gradually upon an enlarging former and roll the edges
and side.
•
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that
what I claim is :—
.
1. The herein described process of making tires which consists in first forming
a metal band into substantially circular shape of lesser diameter than the finished
tire, then expanding the tire gradually upon an enlarging former, substantially as
described.
2. The herein described process of making tires, which consists in first forming a
metal band into substantially circular shape of lesser diameter than the finished tire,
then expanding it upon an enlarging former, then rolling the front and rear edges
into parallelism, substantially as described.
3. In a machine for trueing tires, the combination with the tapering trueing
head, of the front trueing rolls adapted to force the tire thereon, substantially as
described.
4. In a machine for trueing tires, the combination with the tapering head of the
front trueing rolls journaled in swinging roller heads at either side of the trueing
head, adapted to swing inward to bear upon the tires, substantially as described.
5. In a machine for trueing tires, the combination with the trueing head, of feed
mechanism to feed the tire upon the tapering portion of the head, and of the front
trueing rolls and means for operating the same, substantially as described.
6. In a machine for trusing tires, the combination with the trueing head, of feed
mechanism adapted to feed the tire upon the trueing head, a sliding feed table carrying
the front feed rolls, arranged on either side of the trueing head, and of mechanism for
reciprocating such feed tables, substantially as described.
7. In a machine for trueing tires, the combination with a trueing head, of feed
mechanism adapted to feed the tire upon the trueing head, of sliding feed carriages
carrying the front trueing rolls, of two or more rear rolls adapted to bear against
the rear edge of the tire, of feed mechanism for reciprocating the feed carriage,
and of connections between the rear rolls and the feed carriages, substantially as
described.
8. In a machine for trueing tires, the combination with the tapering trueing head,
of the front and rear trueing rolls adapted to roll the front and rear edges of the tire,
substantially as described.
9. In a machine for trueing tires, the combination with the rotary trueing head, of
the side roll 47 and means of bringing the roll into operative position, substantially as
described.
10. In a machine for trueing tires, the combination of the rotary trueing head, the
side roll 47 journaled upon a transverse adjustable sliding table, substantially as
described.
11. In a machine for trueing tires, a feed-mechanism, consisting of a feed-table
operated by a feed-lever, of a tire holder pivotally secured thereon and provided with
adjustable arms, of means, such as crank arm 13, having a pin engaging the segmental
circular slot 14, for tilting the table from a horizontal to a perpendicular position in
its forward movement, substantially as described.
12. In a machine for trueing tires, the combination with the trueing head, of the

page_text: carrying arın 19, having the hooked end 20, adapted to be inverted in its vertical
position to drop the tire substantially as described.
13. In a machine for trueing tires, the combination with the trueing head of the
rear trueing roll 72, secured upon the sliding table 66, of the roll 82, carried by said
table, substantially as described.
14. In a machine for trueing tires, the combination of the tapering trueing head of
the front trueing rolls, the rear trueing rolls and a side expanding roll, substantially
as described.
15. In a machine for trueing tires, a rotary cylindrical trueing head having a
tapering forward portion over which a tire is adapted to be moved and means for
moving the tire on the head, substantially as described.
Dated the 201
11000
PETER GENDRON.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.

page_text: 78 is an upward extension of the bolt 70, on which is adjustably secured the
sleeve 79 having the side extension in which is adjustably secured the rod 80 carrying
the roller head 81 which is adjustable upon the rod, in which is pivotally secured the
roll 82.
The parts being thus constructed and arranged, they are intended to operate as
follows: Motion being given to the trueing roll, it is now ready to receive the tire,
which is placed by the operator upon the tire-holder 10 and fed upon the forward
tapering end of the trueing-roll by moving forward the lever 7, which, by means of
the connecting-lever 9, operates the feed-table 5, carrying with it the tire holder,
which is brought from a horizontal to a vertical position in front of the trueing-head
by means of the crank-arm 13, having a pin engaging into the segmental circular
slot 14 of the frame.
A tire is engaged over the end of the trueing-head, and slightly forced upon the
tapering portion by the operator, who then withdraws the feed-lever 7 with the tire-
holder, to the position shown in Fig. 5: as the feed-lever 7 is brought back to its
initial position, the arm 19 is lowered by means of the connecting link 16 engaging
with the crank 17 of the rock-shaft 18, and rests with its hooked end in front of the
trueing-head.
The operator now moves the friction clutch 34 by means of the hand lever 35 into
engagement with the worm-gear wheel 32 which has motion imparted to it through
the shaft 31, thus putting into operation the shaft 29, and with it the gear-pinions 28
engaging with the rack-bars 27 of the sliding carriage, the carriages being thus fed
towards the trueing-head 4.
The swinging heads 37 and 38 are rotated towards the trueing head in this forward
motion of the carriages by means of the spring-dogs 42 engaging with their heads 44
in the notches of the periphery of the swinging heads, this rotary motion being
continued until the abutments 45 strike against the stops 96, all being adjusted so that
the trueing-rolls 41 and 42 will bear against the forward edges of the tire upon the
trueing head, being held in contact with the side of the trueing head by the tension of
the spring-dogs 42.
The rear trueing roll 72 having been adjusted by the operator by means of the
screw 67 and the top roll 82 having been similarly adjusted to the point to which the
tire is desired to be driven upon the trueing-head, it is evident that this will act as a
stop for the tire. In this position, (shown in Fig. 2), it is evident that the trueing
head being rotated, the front trueing-rolls 40 and 41 will bear against the front edge
of the tire, rolling it with even pressure and forcing it evenly upon the trueing head
in the forward movement of the feed-carriages, the tire being expanded as it passes
from the tapering portion to the cylindrical portion.
This forward movement is continued until the rear edge of the tire is forced against
and is rolled by the rear roll 72, which, being secured against rearward motion by the
screw 67 acts as a stop to the tire, the further forward movement of the front trueing
roll acting to roll the tire against the rear roll, thus trueing the front and rear edges.
In the forward movement of the carriage 25 carrying the rod 57 the stop 58 will
strike the stationary abutment 59, thereby operating the lever 55, which will bear with
its upper end against the wedge-shaped spring 56, the end of which rests against the
swinging-head 53, carrying the rear roll 46; thus the tension of this spring will hold
the rear roll 46 against the side of the trueing-head 4.
By means of the handle 52 operating the pinion 51 which meshes with the gear-
wheel 50, the carriage 48 and with it the rolls 46 and 47, is now adjusted towards the
trueing-head. The roll 46 bears more tightly against the trueing head under the
tension of the spring 56, while the roll 47 is forced up tightly against the side of the
tire. The effect of this rolling upon the side of the tire by the roll 47 is two-fold:
first, it gives the tire a perfect form at every point, rolling down any slight
irregularities, which may exist after it has been forced upon the trueing-head, due
to the welding, or other causes, and second, and principally, it rolls out the tire slightly
expanding it and loosening it by thinning. The tire when driven upon the head is so
tightly fixed thereon as to make it difficult to remove by any ordinary pressure,

page_text: without bending it out of true, while after rolling it with the roll 47, it is easily
removed by the means hereinafter described. When the tire has been rolled thus, and
been made to assume the perfect circular contour of the trueing head at the point to
which it has been forced by the front rolls, to release it from its position upon the
trueing head, the operator' releases the friction clutch 34 from the worm-gear wheel 32,
thereby preventing further motion of the carriage. The friction clutch may be
released automatically if desired, by having a stop suitably arranged in the path of the
lever 35. In practice, the shaft 23 acts as such stop.
The operator now reverses the movement of the shaft 30 by means of the lever 76
attached to the end thereof this, by means of the gear-pinions 28 on the shaft 29,
engaging with the rack-bars 27 on the under side of the carriage, withdraws the
carriages and with them the rolls from the trueing head to the position shown in
Fig. 1. It is evident that as the rear rolls 46, 72, and 82 engage with the rear edge
of the tire, this reverse movement will carry the tire from the trueing head.
The reverse motion imparted to the carriage 25 which carries the rear roll 46 effects
the movement of that roll against the tire, while the rolls 72 and 82 in this reverse
movement are carried by the movement of the carriage 26 by means of the connection
effected by the hook 75 engaging with the hook 74: this connection continuing until
the hooks are disengaged by the rotary movement of the swinging head 38, caused by
the spring-dog 42 engaging in a notch in the periphery of the swinging head, as
before described. When the hooks are thus released the sliding carriage 66 carrying
the rear roll 72 and 82 is moved again to its position shown in Fig. 1, by means of
the spring 68, abutting with its rear end against the end of the screw 67.
In the reverse motion of the carriage 25 which carries the rod 57, the stop 60 will
strike against the stationary abutment 59 thereby operating the lever 55, releasing its
engagement upon the incline of the spring 56, when the action of the spring 54 will
swing the head 53 with the roll 46 away from the trueing-head into its initial position
shown in Fig. 1.
The operator reverses the motion of the bandle 52 to withdraw the carriage 48
which carries the rolls 46 and 47 by means of the connection described in their initial
position shown in Fig. 1.
To repeat the operation, after placing a tire upon the tire-holder, the operator
again moves forward the lever 7, which in its first movement, operates the rock-
shaft 18, and the arm 19 upon the hooked end 20 on which the tire will have
dropped when pushed off from the trueing-head, carrying the tire upon the arm 19 to
one side of the machine.
A slot 77 is formed in the connecting arm 9 to allow the first motion of the
arm 7 to operate the rock-shaft 18 in the manner before described, to carry the
arm 19 out of the way of the tire-holder before the movement of the tire-holder
towards the trueing head is commenced.
The hook 20 on the arm 19 is so constructed that in the horizontal position of this
arm the tire will engage in the hook, and when the arm is rocked, the hook will be
inverted allowing the tire to drop.
It will be seen from the foregoing description that the tire is first fed upon the
tapering portion of the trueing head, it is then forced over the tapering portion upon
the cylindrical portion of the trueing head, by the front trueing head, expanding the
tire, until it is forced against the rear trueing roll 72, which rolls the rear edge. The
rear roll 46 is thrown into operation at the same time, by the spring 56, the side
roll 47 is now brought into operation rolling out all inequalities and slightly
expanding the tire so that when the operator reverses the lever 76, the rear
rolls 72, 82, and 46, bearing at three points on the rear side of the tire, will
force it off, upon the removing arm 19 by which it is carried out of the way as
before described.
The rear rolls standing as they do at an angle to the face of the trueing head,
are provided with suitable inclined faces, to bear against the edge of the tire.
The tire by being forced onto the trueing head by the feed rolls becomes
dished.