Improvements in and relating to Power Hammers Chiefly Designed for Forging Steel Wheels.
Year: 1892

page_text: Date of Application, 12th July, 1892-Accepted, 3rd Sept., 1892
UUMI LEID
DIFCIFICATION.
Improvements in and relating to Power Hammers Chiefly Designed
for Forging Steel Wheels.
We, JOHN PARKINSON, Model Maker of Manayunk Avenue, Manayunk, City
and County of Philadelphia, State of Pennsylvania, United States of America,
and HENRY LINDLEY, Tavern Keeper of 1700 North Front Street, Philadelphia,
County of Philadelphia, State of Pennsylvania, United States of America, 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:―
More particularly our invention relates to power hammers for forging steel
wheels from an ingot or solid bloom between suitable hammer and anvil dies, and
relates especially to the construction of the anvil die for forming the tread and
flange.
The objects of these improvements are to more perfectly and readily accom-
plish the forging or rounding up of the blank and the formation of the tread and
flange thereon and to permit the adjustment of the hammer to different sizes or
diameters of wheels by changing a section of the anvil die.
In carrying out our invention we form the anvil die in sections which may be
held together in any convenient manner, one or more of the sections being
removable. One of the sections is provided with a grooved flat surface located
in a lower plane than the surface of the adjacent section of the anvil die, for
forming the flange and tread upon the blank under the action of a grooved projection
upon the hammer, while the blank is supported against the side of the adjacent anvil
section. For the purpose of more readily turning the blank while it is under the
action of the dies, we employ an antifriction roller upon the anvil die as is more
fully set forth hereinafter.
Our invention also consists of certain improvements and combinations of parts
which are hereinafter more fully described and claimed.
In the drawings:
Fig. 1. is a front elevation of a power hammer embodying our improvements;
Fig. 2 is a vertical sectional view of the same on the line x-x of Fig. 1;
Fig. 3 is a horizontal sectional view of the same on the line y-y of Fig. 1 ;
Fig. 4-is a perspective view of one of the anvil sections ;
Figs. 5, 6, and 7 are sectional views of the bloom and blank illustrating the
form thereof at different stages of construction; and
Fig. 8 is a transverse vertical sectional view through the middle of the anvil die
illustrating a modification of the invention.
A is the hammer.
B is the hammer die carried thereby and provided with the flat face b and the
projection D. The projection D is provided with a groove d adjacent to the flat
face b..
C is the anvil die, consisting of the body portion E having the flat face c
corresponding to the flat face b of the hammer die, and one or more removable
sections F. These removable sections F are provided with a face fat a lower
level than the flat face c of the anvil die and a groove 9 therein corresponding to
the grooved in the projection D of the hammer die and substantially in line
therewith..
The sections F may be guided and centered with reference to the body E of
the anvil die by means of a grooved guide and guideway h formed between their

page_text: adjacent surfaces, and may be held to the body by means of bolts G as shown in
dotted linės.
H is an anti-friction roller carried by an upright I of the section F and adapted
to bear upon the tread of the wheel being forged, to assist the turning of the
blank under the action of the dies to accomplish the forging of the blank and the
formation of the flange and tread.
J is a frame within which the anvil die is arranged. K, K are adjusting screws
carried by the frame J and bearing upon the anvil die for the purpose of
adjusting and properly centering it under the hammer die B. L, L (dotted lines
in Figs. 1, 2 and 3) are gauge blocks placed upon the anvil die to limit the descent
of the hammer die, and thus gauge the thickness of the blank under the action of
the dies in performing the flattening down operation.
If desired these gauge
blocks may be made removable, so that they may be replaced by others to change
the gauge. M, M, are pins upon the section F to support the blank in position
under the action of the dies.
We prefer the minor details of construction which have been shown but do not
limit ourselves to them as, it is apparent that they may be varied without departing
from the invention.
From the foregoing description of the apparatus the operation will be readily
understood. The heated ingot or bloom (Fig. 5) is placed upon the flat face c of
the anvil die and is flattened down between the faces b and c into the shape shown
in Fig. 6. This flattened bloom or blank is then placed upon the section Fresting
against the side surface of the section E under the projection D of the hammer.
Under the action of the grooved projection D of the hammer die and the grooved
face of the anvil die the flattened bloom or blank is forged or rounded up and
the tread and flange are formed, the blank being turned while under the action of
the dies and the roller H assisting the turning. The rounded and flanged blank
may be subsequently treated between dies to form the web and may have the axle
hole formed therein by punching or drilling.
When it is desired to make a wheel of a different size or diameter the section F
may be removed and replaced by another section of a different size, thus wheels of
different sizes may be made upon the same anvil die; and the necessity of having
anvil dies of different sizes for each size of wheel is avoided.
By means of the adjusting screws K the section or sections F may be adjusted
with reference to the section E.
In the drawings we have shown a double hammer, having two hammer die
projections D and a corresponding anvil die with two sections F. Either or both
may be employed as desired, and the two sections F may be made for different
sizes or diameters of wheels, thus having each hammer suited to two sizes of
wheels without changing the sections.
The hammer may be made with a single hammer die projection D and its corre-
sponding anvil die section F.
In Fig. 8 is shown a slight modification in which the section E is movable upon
the section F, and rests upon the face of it.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1st. In a power hammer the anvil die having the supporting face for the wheel
blank at a lower level than the upper face of the anvil combined with the hammer
die having a part projecting over the lower supporting face of the anvil die, the
anvil die being made in sections for the purpose described.
2nd. In a power hammer the sectional anvil die described.
3rd. In a power hammer the anvil die having the lateral support for the tread of
the wheel to support it in an upright position against the body of the anvil die and
the antifriction roller above the lateral support to assist the turning of the wheel
blank.

page_text: 4th. The frame J, sectional anvil die and the adjusting and clamping screws K
carried by the frame J and bearing upon the sections of the anvil die.
Then of Tun AD 1892
JOHN PARKINSON.
HENRY LINDLEY.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicants.