Improvements in the Manufacture of Angular-section Metal Junction Hoops, Rings, or Frames.
Year: 1899

page_text: Date of Application, 17th June, 1899
Complete Specification Left, 19th Mar., 1900-Accepted, 16th June; 1900 :
Date of Application, 17th June, 1899
Complete Specification Left, 19th Mar., 1900-Accepted, 16th June; 1900 :
PROVISIONAL SPECIFICATION..
Improvements in the Manufacture of Angular-section Metal Junction
Hoops, Rings, or Frames.
I, Jons GILL SHORT, Agent, of 57, John Street, Sunderland, in the County
of Durham, do hereby declare the nature of this invention to be as follows:-
This invention relates to the manufacture of angular-scelion metal hoops,
rings or frames that are used for effecting the junction or connection between
one object and another--such as a ventilating shaft or other fitting, and a deck
or other part and which consist of an horizontal or similar portion or flange
merging into a vertical or like portion of lesser diameter or width and length
forming a rim surrounding the opening in the ring or frame, said rim receiv
ing and holding the fitting and the flange being secured to the part whereto.
the fitting is to be fixed.
At present in certain cases these articles are inade from an angle-iron bar
bent to shape and welded, but this plan is disadvantageous inasmuch as it is
very expensive, while accuracy of outline is difficult of attainment.
It is with the object of obviating the aforementioned disadvantages that I
have devised my invention which consists in stamping or pressing the article,
by means of suitable dies or formers, from a blank in two operations, by one
of which a cup-like form is produced, or in other words the angular formation
is obtained with an horizontal or approximately horizontal part uniting the
vertical portion or rim, which part, by the next or last operation, is displaced,
whereupon the ring or frame, is ready for use or subsequent treatment prior to
use, depending upon the service.
In carrying my invention into practice, I employ a core or spindle of a less
external size than the intérnal size of the articles to be produced and at one
end I provide a die or former more or less corresponding in height and diameter
or width and length with the same internal dimensions of the finished articles.
With this core and die co-acts another die or former having at one end-but
preferably at both ends-a-recess or cavity and in the intervening material a
hole, the latter being of a size sufficient to permit the passage of the core while
the recess is made of a depth and diameter or length and width to agree
respectively with the distance apart of the upper face of the horizontal part
or flange and the top of the rim and the external size intervening between
these parts in the required finished articles; further, the thickness or wall of
this former or die is made ample to produce the width of the flange: These
are the appliances necessary to complete the first operation aforesaid in con-
junction with a steam hammer or equivalent contrivance of ordinary construc-
tion with which also co-operate a die or block and punch for accomplishing
the second operation. The die or block is made with a hole throughout of a
greater diameter or length and width than the external dimensions of the ri
of the finished articles whereas the punch is made of an external size to meet
the internal size of the said part. Both this block and punch may be of any

page_text: appropriate height and flat at each end though the end of the punch to operate
ou the articles is preferably formed convex or slightly conical.
The blanks are obtained by ordinary means and prior to formation a central
hole is made in each for the spindle or core aforesaid to pass therethrough and
their corners are cut off at an angle or curved to prevent them warping in
working, thereby ensuring accuracy in shape. The blanks are of course heated
in the ordinary manner for working.
Having described my appliances for practically applying my invention I will
now explain their operation which-assuming a steam hammer is employed-
is briefly as follows:-
The core or spindle with its surrounding die or former is arranged vertically
upon the anvil-block of the hammer, the area of its end, in conjunction with
the die, maintaining it in position. Then the blank is placed over the core to
lie upon the die and next one end of the recess-ended former is disposed there-
over. The hammer is now actuated to strike the latter former which, along
with the other, presses or stamps the blank into a cup-like shape. In this
way the first operation is constituted; and in course the recessed former, the
partially fashioned article and the core and die are removed from the hammer.
Now the hollow block or die is positioned upon the anvil-block and the article
is laid upon the block with the raised part or rim in the central hole. Then
the punch is inserted into the article with its convex or conical end next the
part uniting the rim, and lastly the hammer is operated to cause the punch to
knock out the said part, thereby completing the second operation and the manu-
facture of the article for use.
Instead of the core and its die resting directly upon the anvil-block, the core
may be made hollow and the anvil-block covered by a plate provided with a
central pin or projection over which the core is placed for use.
The general contour of the core, dies or formers and punch are of course
decided by that of the article to be produced, being curvilinear or linear as
required.
Dated this 16th day of Luna 1890
J. A. HARVEY,
Chartered Patent Agent,
5, St. Nicholas Buildings, Newcastle-on-Tyne.
Improvements in the Manufacture of Angular-section Metal Junction
Hoops, Rings, or Frames.
.
I, JOHN GILL SHORT, Agent, of 57, John Street, Sunderland, in the County
of Durham, 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:-
-
This invention relates to the manufacture of angular-section metal hoops,
rings or frames that are used for effecting the junction or connection between
one object and another-such as a ventilating shaft or other fitting and a deck
or other part and which consist of an horizontal or similar portion or flange
merging into a vertical or like portion, of lesser diameter or width and length,
forming a rim surrounding the opening in the ring or frame, said rim receiv-

page_text: ing and holding the fitting, and the flange being secured to the part whereto
the fitting is to be fixed.
At present in certain cases these articles are made from an angle-iron bar
bent to shape and welded, but this plan is disadvantageous inasmuch as it is
very expensive, while accuracy of outline is difficult of attamment.
It is with the object of obviating the aforementioned disadvantages that I
have devised my invention which consists in stamping or pressing the articles,
by means of suitable dies or formers, from a blank in two operations, by one
of which a cup-like form is produced, or in other words the angular formation
is obtained with an horizontal or approximately horizontal part uniting the
vertical portion or rim, which part, by the next or last operation, is displaced,
whereupon the ring or frame is ready for use or subsequent treatment prior to
use, depending upon the service.
I will now fully describe my invention, and in so doing I will, by way of
example, explain the manufacture of a hoop, ring or round frame with the aid
of the accompanying drawings to which I will particularly refer as occasion
arises, premising that Figs. 1, 2, 3, 4, and 5 are views half in central vertical
section and half in elevation; Figs. 6 and 7 are plans; and Figs. 8 and 9 are
complete central vertical sections indicating respectively the relative positions,
after the completion of the two operations of manufacture, of the appliances
illustrated separately in Figs. 2 and 3, and in Figs. 4, 5, and 6.
To facilitate understanding, I represent the finished article in Fig. 1, A denot-
ing its horizontal portion or flange, and A¹ its vertical portion or rim.
In carrying my invention into practice, I employ, referring to Fig. 2, a core
or spindle B of a less external size than the internal size of the article to be
produced, and at one end I provide a die or former more or less correspond-
ing in height and diameter with the same internal dimensions of the finished
article, and fashioned with a central part 6 for ensuring the centricity of the
blank when being worked. The two parts B and b may be separate and suit-
ably fastened together for use, but I prefer to make them in one piece as shown,
removing the material at the centre to obtain lightness.
With the core B and die b co-acts another die or former C, Fig. 3, having
at one end-but preferably at both ends as illustrated for the sake of con-
venience a recess or cavity and in the intervening material a hole c, the
latter being of a size sufficient to permit the easy passage of the core B, whose
function is to maintain this die in a central position in use, while the recess
is made of a depth and diameter to agree respectively with the distance apart
of the upper face of the horizontal part or flange A and the top of the rim A¹
and the external size intervening between these parts in the required finished
article further, the thickness or wall of this former or die C is made ample
to produce the width of the flange A.
These parts B, b and C are the appliances necessary to complete the first
operation aforesaid in conjunction with a steam hammer or equivalent contri-'
vance of ordinary construction with which also co-operate a die or block D and
punch for accomplishing the second operation, these two appliances being
represented in Fig. 4, and Figs. 5 and 6 respectively. The die or block D is
made with a hole d throughout of a diameter to correspond with the external
dimension of the rim A¹ of the finished article, whereas the punch E. is made
of an external size to meet the internal size of the said part. Both this block
and punch may be of any appropriate height and flat at each end, though the
end of the punch to operate on the articles is preferably formed convex or
slightly conical, as indicated in Fig. 5. To save weight, the punch is formed
hollow and strengthened with ribs e, e; and if desired it may be of a less height
than that shown, a loose metal ring being employed with it to procure the
necessary projection to receive the blow of the hammer.
The blank F, shown in Fig. 7, is obtained by ordinary means, and prior to
formation a central hole f is made in it for the spindle or core B aforesaid to

page_text: pass therethrough, this hole being of the same diameter as the part of the
die to prevent lateral movement of the blank while being operated upon, or
the same object may be attained, when the part is not provided, by making
the hole the same diameter as the core B, but I recommend the former
arrangement, as it is much handier in practice. The corners, of the blank aré
cut off at an angle, as indicated by the dot and dash lines in the said figure, or
curved to prevent it warping in working; thereby ensuring accuracy in shape.
However I find it more advantageous to cut the blank from the plate before
shaping it with the appliances described, making its diameter approximate that
of the flange A of the finished article. The blanks are of course heated in
the ordinary manner for working.
The appliances are adapted to be conveniently manipulated; for instance, in
the case of the core B, and die , and the dies C and D, holes may be made
in them at diametrically opposite points to receive rods or handles, and holes
may be made in one of the ribs of the punch E to receive hooks on a rod
or handle.
Having described my appliances for practically applying my invention I will
now explain their operation which-assuming a steam hammer is employed-
is as follows:
-
The core or spindle B with its surrounding die or former is arranged verti-
cally upon the anvil-block of the hammer, partly shown at G in Figs. 8 and 9,
the area of the end maintaining the position. Then the blank F is placed over
the core B to lie upon the die as indicated by the dot and dash lines in
Fig. 2 and next one end of the recess-ended former C is disposed thereover.
The hammer is now actuated to strike the latter former which, along with the
other, presses or stamps the blank into a cup-like shape, represented at Fin
Fig. 8. In this way the first operation is constituted; and in course the
recessed former C, the partially fashioned article F, and the core B and die b
are removed from the hammer. Now the hollow block or die D is positioned
upon the anvil-block G, and the article F is laid upon the block with the raised
part or rim in the central hole as indicated by the dot and dash lines in Fig. 4.
Then the punch E is inserted into the article with its convex or conical end
next the part uniting the rim, and lastly the hammer is operated to cause the
punch to knock out the said part, thereby completing the second operation
and the manufacture of the article for use, or for treatment prior to use, as
shown in Fig. 9.
Instead of the core B and its die resting directly upon the anvil-block G,
the core may be made hollow and the anvil-block covered by a plate provided
with a central pin or projection over which the core is placed for use.
The manufacture of articles, other than round, will also be understood from
the preceding description as the operations and the appliances will be the same,
with the exception, of course, that the shape of the appliances will be decided
by the contour of the articles to be produced, being curvilinear or linear as
required.
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 improvements in the manufacture of angular-section metal junction
hoops, rings or frames, which consists in stamping or pressing the article, by
means of suitable dies or formers, from a blank in two operations, by one of
which a cup-like form is produced, or in other words the angular formation is
obtained with an horizontal or approximately horizontal part uniting the
vertical portion or rim, which part, by the next or last operation, is displaced,
whereupon the ring or frame is ready for use, or subsequent treatment prior to
use, substantially as described.
:

page_text: 2. In the manufacture of angular-section metal junction hoops, rings or
frames, the use of the appliances herein described in reference to the accom-
panying drawings.
Dated this 17th day of March 1900.
For the Applicant,
J. A. HARVEY,
Chartered Patent Agent,
3, St. Nicholas' Buildings, Newcastle-on-Tyne.