Improvement in Tools for Forming Collars or Enlarging any Part on Bars of Iron or Steel or other Malleable Forgings.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvement in Tools for Forming Collars or Enlarging any Part on
Bars of Iron or Steel or other Malleable Forgings.
I, ROBERT HYDE, Derbyshire House, Darnall, Sheffield, in the County of York,
Engineer, do hereby declare the nature of this invention to be as follows:-
My improvement consists of a combination of tools which enables ironworkers
to enlarge any part of a round, square or other shaped bar expeditiously and at
reduced expense. The method at present adopted such as giving heavy blows on
the end of the bar after it has been heated is expensive and unsatisfactory often
bending the forging and causing other defects which are difficult to eliminate.
My improved tools are made in such a form that the piece is easily placed in posi-
tion to be acted upon.
When the piece is a round bar the joint of the tools would be in the centre
of the diameter. Let it be understood that a bar requires to have two collars
formed on it a distance apart, the collars to be formed are such as are formed
on brake shafts used on railway wagons & carriages. The tools are made to join
or meet in the centre, one end of tools is made to fit bar, the other end of tools
is recessed to receive sliding dies, which dies also fit the bar and when practical
should extend to the end of the bar. The dies can project outside the main tool
a distance equal to the amount of shortening that takes place in the bar in
forming the collar a space being left in the main tool to allow dies to slide into
as the bar is shortened by pressure acting on end of bar and dies at the same
time, the bar having been previously heated in the part where the collar is to be
formed from the solid bar by pressure of a hydraulic press, or the blows of a
hammer, or any other suitable means. The dies can be in any number of parts
to suit the contour of the forging. The main receiving tools may be made in
any number of parts and suitably held together so that when the pressure is
applied to form the collar or enlarge a shaft the tools do not materially expand
or divide.
It will be necessary to have a fixed stop at the other end of, or some part of
the bar to give proper distance of collar, and keep bar in position. The tools
and dies can be made of any suitable material.
521
Improvement in Tools for Forming Collars or Enlarging any Part on
Bars of Iron or Steel or other Malleable Forgings.
I, ROBERT HYDE, Derbyshire House, Darnall, Sheffield, in the County of York,
Engineer, do hereby declare the nature of this invention and in what manner
FPrice 8d.1

page_text: the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My improvement consists of a combination of tools, which enables ironworkers
to enlarge any part of a round, square, or other shaped bar expeditiously, and at
reduced expense. The methods at present adopted such as giving heavy blows
on the end of the bar after it has been heated, are expensive and unsatisfactory;
often causing defects which are difficult to eliminate. My improved tools are
made in such a form that the piece is easily placed in position to be acted upon.
When the piece is a round bar, the joint of the tools would be in the centre
of the diameter. Let it be understood that a bar requires to have two collars
formed on it a distance apart; the collars to be formed, are such as are formed
on brake shafts, used on railway wagons and carriages. The tools are made to
join or meet in the centre, one end of tools is made to fit bar, the other end of
tools is recessed to receive sliding dies, which dies also fit the bar and when
practical should extend to the end of the bar. The dies can project outside the
main tool a distance equal to the amount of shortening that takes place in the
bar in forming the colfar; a space being left in the main tool to allow dies to
slide into, as the bar is shortened by pressure acting on end of bar and dies, at
the same time; the bar having been previously heated, in the part where the
collar is to be formed from the solid bar by pressure from a hydraulic press or
the blows of a hammer, or any other suitable means. The dies can be in any
number of parts, to suit the contour of the forging. The main receiving tools
may be made in any number of parts and suitably held together so that when
the pressure is applied to form the collar or enlarge a shaft the tools do not
materially expand or divide.
It will be necessary to have a fixed stop at the other end of, or some part of
the bar to give proper distance of collar, and keep bar in position. The tools
and dies can be made of any suitable material.
In order that my
said invention and the methods and means I prefer to adopt
in carrying it out in practice may be more completely understood, it is illustrated
on the accompanying sheet of explanatory drawings, which are marked with
figures of reference, corresponding with those in the following discription, like
reference figures indicating the same parts in all figures.
Fig. 1 Sheet 1 is plan of tools as used with a hydraulic press.
Fig. 2 is an end elevation of same.
Fig. 3 is side elevation.
Fig 4 shows collar formed by tools.
Fig. 5 is inverted plan of sliding die carried in top tool enlarged.
Fig. 6 is end view of same.
Fig. 7 is plan of sliding die working on bottom tool enlarged.
Fig. 8 is end view of same.
Referring to Figs. I, II, III, 2 is top tool, 3 is recess in top tool to receive die 6
in which it slides.
4 is bottom tool, 5 is recess for die 7 to slide in. Figs. V & VI are enlarged
showing top die G. Figs. VII & VIII are enlarged showing bottom die 7. These dies
are suitable for operating on round bars such as brake shafts for railway carriages
and wagons. 8 shows a bar in position ready to be operated upon, 9 is collar
formed on a straight bar.
The dies & are set to project outside tools 2 & 4 equal to the amount of iron
required to form collar. The bar 8 after being heated is laid in position in the
tools which are jointed in the centre of diameter of bar 8. By preference I use
tools in connection with a hydraulic press as shown, the top tool being attached
to press ram 10, and brought together and then held down firmly: at the same
time the ram 11 is forced against sliding dies 6 & 7, which partly enclose straight
har 8. the end of which is placed even with outer end of projecting dies. Ram 11
then forces the sliding dies 6 & 7 into recesses 3 & 5, at the same time shortening

page_text: bar 8, and forming collar 9 in recess 12 in end of dies 6 & 7. A stop 13 is pro-
vided, by preference it is made adjustible by screwed bars 14 & 15 which are
secured to press bed at 16; this part of press bed is recessed at 17 to allow
bar 8 to be laid in tools 2 & 4 and dies 6 & 7. The tools 2 & 4 are boxed
together at 18; the bottom tool 4 has a flange standing up at 19 to keep top tool 2
in position. The hydraulic presses are provided with means to return the rams 10)
& 11, not shown. Two lugs are provided on die 6 and two recesses in die 7 to
keep them truly together. The operation of forming a collar on a straight round
bar such as are used for ry. carriage and wagon brakes say it is 2" diam. and
a collar 4" diam. 1" wide is required to be formed, say 10 from the
end of the bar, make dies 6 & 7 equal to collar, and length to end of bar plus
contraction; then adjust dies 6 & 7 to project outside tools 2 & 4 about 3"
the amount the bar will be shortened in forming the collar 9. Heat the bar
where the collar is to be formed, place it in the tools and dies; close tools by
operating ram 10, then press dies 6 & 7 into recesses 3 & 5. Also the bar 8 which
is shortened and the collar 9 formed by ram 11 being forced against dies, and
end of bar 8, causes the dies 6 & 7 to slide inside tools 2 & 4, during which
operation the collar is formed in dies 6 & 7 at 12. The bar 8 is placed against a
stop 13. The tools 2 & 4 are made of suitable shape to suit the work to be done
they may be made up in parts. They can be used in connection with a strong
screw, or lever, or hammer.
Having now practically 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. Tools for forming collars on malleable metal bars as shown and described.
2. Tools for enlarging any part of a malleable metal bar with sliding dies 6 & 7
as arranged to slide in tools 2 & 4.
3. The improved tools with sliding dies, which enclose the bar and slide with
the bar, equal to the shortening necessary to form enlarged part or parts substan-
tially as herein described and illustrated.
Dated this 22nd day of December 1899.