provements in Machinery for Shaping Metallic Articles.
Year: 1898

page_text: PROVISIONAL SPECIFICATION
Improvements in Machinery for Shaping Metallic Articles..
We, JOIN VERNON PUGH, of Cumnor Cottage, Leek Wootton, near Kenilworth,
in the County of Warwick, Mechanical Engineer, and HEBER ISAAC PEDLEY, of
No. 17, Dora Road, Birmingham, in the County of Warwick, Mechanical Engineer,
do hereby declare the nature of this invention to be as follows:-
Our invention consists of machinery for shaping metallic articles, the parts of
which machinery are constructed and arranged and operate in the manner herein-
after described. Machinery constructed according to our invention is especially
useful for perfecting the shape of metallic articles as hereinafter explained.
In constructing machinery according to our invention we employ a series of
three dies one of which is stationary and the other two movable preferably in a
vertical direction. The stationary die is fixed on the bed of the machine and the
acting part of the lower movable die works in an opening in the fixed die. The
upper movable die is carried by a press bolt or plunger. The acting faces of the
upper and lower movable dies have a configuration corresponding to the upper and
lower faces respectively of the article to be operated upon, while the aperture in
the fixed die has the configuration of the other two sides of the article to be operated
upon which article is pressed through the opening in the fixed die by the descent
of the upper movable die. The lower movable die is supported on the plunger
of a hydraulic press or is otherwise pressed upwards with considerable force.
We will describe the action of the machine in connection with the shaping of
a velocipede crank. The blank is placed on the lower die edgewise and the upper
die is brought down upon the upper edge of the blank with sufficient force to press
the crank through the opening in the fixed die. The resistance to the descent
of the crank through the fixed die presented by the hydraulic cylinder carrying
the lower movable, die, is such as to force the steel or metal of which the crank
is made closely into the space enclosed by the dies and thereby to finish or shape
the blank operated upon into the exact figure required without bulging or burr
on any part.
We have described the resistance offered to the descent of the blank through
the fixed die as afforded preferably by the plunger of a hydraulic press but other
upward pressure may be applied with the same or nearly the same result..
Dated the Fifth day of February 1898.
W. T. WHITEMAN,
Agent for the Applicants.

page_text: Improvements in Machinery for Shaping Metallic Articles.
We, JOHN VERNON PUGH, of Cumnor Cottage, Leek Wootton, near Kenilworth,
in the County of Warwick, Mechanical Engineer, and HEBER ISAAC l'EDLEY, of
No. 17, Dora Road, Birmingham, in the County of Warwick, Mechanical Engineer,
do hereby declare the nature of our invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the follow-
ing statement:.
-
Our invention consists of machinery for shaping metallic articles the parts of
which machinery are constructed and arranged and operate in the manner herein-
after described. Machinery constructed according to our invention is especially
useful for perfecting the shape of metallic articles as hereinafter explained.
In constructing machinery according to our invention we employ a series of
three dies one of which is stationary and the other two movable preferably in a
vertical direction. The stationary die is fixed on the bed of the machine and the
acting part of the lower movable die works in an opening in the fixed die. The
upper movable die is carried by a press bolt or plunger. The acting faces of the
upper and lower movable dies have a configuration corresponding to the upper and
lower faces respectively of the article to be operated upon, while the aperture in
the fixed die has the configuration of the other two sides of the article to be operated
upon which article is pressed through the opening in the fixed die by the descent
of the upper movable die. The lower movable die is supported on the plunger
of a hydraulic press or is otherwise pressed upwards with considerable force.
We will describe the action of the machine in connection with the shaping of
a velocipede crank. The blank is placed on the lower die edgewise and the upper
die is brought down upon the upper edge of the blank with sufficient force to press
the crank through the opening in the fixed die. The resistance to the descent
of the crank through the fixed die presented by the hydraulic cylinder carrying
the lower movable die is such as to force the steel or metal of which the crank
is made closely into the space enclosed by the dies and thereby to finish or shape
the blank operated upon into the exact figure required without bulging or burr
on any part. In addition to the function described of the lower movable die its
use prevents the warping or distortion of the article being operated upon as it
passes out of the stationary die.
We have described the resistance offered to the descent of the blank through
the fixed die as afforded preferably by the plunger of a hydraulic press but other
upward pressure may be applied with the same or nearly the same effect.
Figure 1 of the accompanying drawings represents in vertical section machinery
containing our improvements for shaping velocipede cranks.
Figures 2, 3, 4, 5, 6 and 7 represent the tools or dies of the said machinery
detached showing the different stages of the manufacture of a velocipede crank;
and Figure 8 represents the thickened edged plate from which we prefer to make
the crank blanks to be operated upon.
We prefer to make the crank blanks upon which we operate by the process of
manufacture described, represented and claimed in the Complete Specification of
our Patent No. 3007 year 1898 and we have represented in Figure 8 the rolled plate
or bar which we employ according to the said process of manufacture. In order
to cut out from the plate Figure 8 the crank blanks upon which we intend to
operate we employ the dies or tools a, b, e represented in the machine Figure 1

page_text: and detached drawn to a larger scale, partly in elevation and party in section, in
Figure 2 and in plan (the upper tool a being removed) in Figure 3.
We support the lower movable die or tool 6 upon the plunger B of a hydraulic
or other press (see Figure 1) and we mount the upper movable tool or die a on the
plunger of another vertical reciprocating hydraulic or other press not shown in
the drawings. The stationary die c has a hole or passage through it of the shape
of the crank to be made and is supported in a recess in the bed of the machine.
The crank blank having been cut out of the plate Figure S by the descent of
the movable dies or tools a, b Figures 1, 2 and 3 the said blank is placed in the
stationary die c Figures. 4 and 5, being supported on the lower movable die or
tool while the upper tool or die a descends and compresses the blank with con-
siderable force. The blank thus operated upon is similarly treated, in the tools
Figures 6 and 7 but upon the opposite edges of the crank instead
of upon the opposite faces as in Figures 4 and 5 the acting faces
of the tools a, b in Figures 6 and 7 and the configuration of the hole or opening
in the stationary die e being correspondingly modified. The stationary die c in
Figures 4, 5, 6 and 7 may have a cutting edge by which the faces of the crank
may be trimmed or shaved on the descent of the movable dies or tools, any subse-
quent treatment of the cranks being rendered unnecessary.
In this way a crank is produced without burr or projection on any part the said
crank by the compressing operation described being made to conform to the space
enclosed by the three tools a, b, c as will be understood by an examination of
Figures 4, 5, 6 and 7.
Although we have only described our invention in connection with the shaping
of velocipede cranks to which it is particularly applicable we wish it to be under-
stood that the said machinery may be employed in the shaping of other cranks and
articles.
Having now particularly described and ascertained the nature of our
invention and in what manner the same is to be performed we declare that
we claim as our invention;
In machinery for shaping metallic articles the combination of a stationary die
having a hole or opening corresponding to the shape of the article to be manu-
factured with a pair of movable dies or tools capable of working in the hole or
opening in the stationary die by which dies or tools the blanks are cut out and
thereby roughly fashioned and between other like dies or tools they are subsc-
quently squeezed or compressed and if desired shaved on their opposite faces and
edges and thereby perfected in shape substantially as hereinbefore described and
illustrated in the accompanying drawings.
Dated the Eighteenth day of October 1898.
JOHN VERNON PUGH.
HEBER ISAAC PEDLEY.