Improvements in Machinery for Manufacturing Copper or other Metal Bends for Forming Tubes and such like.
Year: 1893

page_text: Date of Application, 5th June, 1893
Complete Specification Left, 5th Mar., 1894-Accepted, 7th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Manufacturing Copper or other
Metal Bends for Forming Tubes and such like.
I, ARCHIBALD MCDIARMID of 50 Moyola Street, Belfast, do hereby declare
the nature of this invention to be as follows:-
This invention relates to a machine for manufacturing, from sheet metal, bends
or curves for forming tubes and such like.
The machine consists of one or more grooved wheels which are rotated by hand
or by power. Fitted, preferably, above the grooved wheel or wheels is or are one
or more die or counterpart wheels which has or have a bulged or convex surface to
correspond with the grooved or concaved surface of the lower wheel or wheels.
The convex or counterpart wheel or wheels is or are or may be also rotated by
hand or by power. The wheels may be mounted on a suitable frame and the
distance between the wheels or sets of wheels may be adjusted by means of a screw
or screws or a lever or levers. The sheet metal is fed in between the wheels or
sets of wheels and, is made to conform to or is bent or dished into the shape of the
groove. The adjustment between the wheels or sets of wheels is such as to submit
the metal to a very heavy pressure.
In order to curve the bends to any desired radius a third wheel or set of wheels.
is or are provided. This wheel or set of wheels is, preferably, arranged at the
back of the other wheels or sets of wheels and is capable of vertical adjustment in
the frame of the machine. By elevating or depressing this third wheel, or set of
wheels, which bears against the end of the bend as it comes from between the
bending or dishing wheels, it can be bent or curved to any desired radius or curve.
If desired the bending or dishing part of the machinery may be made in the
form of long rollers which are cut or made, respectively, with a number of
circumferential grooves and convex ribs so as to roll out different shapes and
sizes of bends. In this case a curving roller would be fitted at the back of
the dishing rollers.
When the bends are to be 'made into tubes, two of them, of the proper shape,
are welded, soldered, or otherwise fastened-together in any ordinary manner.
Dated this 3rd day of June-1893.
H. D. FITZPATRICK,
70, Wellington Street, Glasgow.
COMPLETE SPECIFICATION.
Improvements in Machinery for Manufacturing Copper or other
Metal Bends for Forming Tubes and such like.
I, ARCHIBALD MCDIARMID, of 50 Moyola Street, Belfast, 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 a machine for manufacturing, from sheet metal, bends
or curves for forming tubes and such like.
The machine consists of one or more grooved wheels which are rotated by
hand or by power. Fitted, preferably, above the grooved wheel or wheels, is
or are one or more die or counter part wheels which has or have a bulged or
D
1

page_text: wheel and is secured at its inner end by the nuts and corrugated washer s'.
The slot r is indicated in dotted lines at Fig. 1 and in full lines at Fig. 5. The
wheel has teeth O' on it which mesh with the teeth of the pinion P carried on
the bottom shaft Q. The wheel O is not supported on bearings but is provided
with a boss or projecting part 02 which passes through a hole cut in the frame.
The wheel is retained in place by the circumferential rib or bead 03 and a circular
disc or plate R, see also Fig. 5, which is bolted to the outside of the boss. The
rib O bears against the inside of the frame A' and the edge of the plate R
against its outside, so that the wheel is held securely in position by the frame.
The plate R is not bolted to the boss so tight as to prevent the wheel revolving
easily.
The stud 9. which is adjustable in the slot r can be clamped in any desired
position in said slot by means of the nuts and corrugated washer s¹.
As will be seen by turning the wheel O to the right or left an eccentric movement
is given to the wheel F and it is brought nearer to or moved further away from
the wheels B, C.
In Fig. 4 a slightly different method of adjusting the wheel F is shown. In this
case the frame A' is made with an inclined slot on guides in which slides a nut v¹.
Secured loosely on a stud u projecting from the nut is the wheel F. A screwed
spindle T passes through the nut and by turning the handle U at the lower end of
the spindle the nut and with it the wheel F is raised and lowered, and, owing to
the slot being inclined, is moved near to or farther away from the wheels B, C.
The shaft Figs. 1 and 2 may be turned by hand or by power.
Vare guide pulleys or rollers.
If desired two or more wheels or sets of wheels B, C, and F may be fitted on the
machine and they may be located on either or both sides. In some cases it may
be found advantageous to fit the wheels B, C, and F between the frames A, A¹.
In order to produce bends of different widths and cross sections a
interchangeable wheels B, C, F of different sizes and forms is provided with each
machine.
set of
The grooved wheel B can, when necessary, be taken off the shaft E and secured
to the shaft D in place of the wheel C, and vice versa.
If desired the machine may be so built that the bending wheels will be on the
top instead of at the side.
It is to be understood that I do not confine myself to the precise construction
shown on the drawings as parts of the machine may be altered or modified without
departing from the principle of the invention.
Having now particularly 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
consider novel and desire to claim is :-
1. The combination, in a machine of the class set forth, of one or more grooved
wheels, such as B, and one or more convex or die wheels, such as C, said wheels
being rotated either by hand or by power, substantially as hereinbefore described
with reference to the drawings annexed.
2. The combination with one or more wheels B, C, of one or more adjustable
wheels F, for curving the bends, substantially as hereinbefore described with
reference to the drawings annexed.
3. A machine for manufacturing copper or other metal bends for forming tubes
and the like, constructed substantially as herein before described and shown on the
drawings annexed.
1 1
1 1004
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Agent.