IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR MAKING CARRIAGE SPRING HEADS
Year: 1876

page_text: · LETTERS PATENT to Jonas Woodhead, of Westholme Street, Bradford, in the
County of York, Spring Manufacturer, for the Invention of "IMPROVEMENTS
IN THE METHOD OF AND APPARATUS FOR MAKING CARRIAGE SPRING
HEADS."
Sealed the 28th July 1876, and dated the 31st January 1876.
PROVISIONAL SPECIFICATION left by the said Jonas Woodhead at the
Office of the Commissioners of Patents on the 31st January 1876.
JONAS WOODHEAD, of Westholme Street, Bradford, in the County of York,
Spring Manufacturer. "IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR
MAKING CARRIAGE SPRING HEADS."
This Invention relates to certain improvements in the method of and apparatus
for making carriage spring heads. The method hitherto adopted for making the
spring heads is to have them forged by a coach smith, which operation requires a
great amount of time to make the heads the proper size and shape required in
consequence of the peculiar shape of the same.
The object of my Invention is to construct an apparatus in such a manner that
an attendant can forge any number of heads to one uniform size, giving the same a
better and neater finish than hitherto, and in considerably less time than when
made by the ordinary method.
I accomplish my object in the following manner:-I construct a strong metal
frame, the top or upper portion of which is prepared with suitable bearings for the
reception of a shaft. On this shaft is forged or turned one or more eccentrics,
and on one end of the shaft is fixed a fly wheel of the required diameter and
weight to maintain the momentum of the apparatus when in motion. Connected
with the said shaft and fly wheel is a clutch motion for giving motion to the said
shaft and eccentrics, so that only one or more revolutions may be made as required,
the power will be transmitted to the machine by a belt from a suitable pulley or
drum to the fly wheel. To each of the eccentrics on the shaft I attach a block by
means of connecting rod and eccentric straps. These blocks work in slides, and
the bottom or under side of the said blocks are prepared to receive punches or dies
of various sections. Opposite to these punches or dies, and secured to the frame-
work of the apparatus, are sockets, with the holes slightly larger than the section
of the punches. Between these aforesaid punches or dies and sockets the bars of
steel or iron are placed to be cut or punched to the required sizes and shapes for
various spring heads; the punches are so arranged to leave the pieces of steel or
iron with fringes or scarfs on to facilitate the welding of the same to the spring
plate for back after the various parts have been cut or punched that are required
to form a spring head; the same are attached to a plate or bar of steel the suitable

page_text: ength for a spring back, and heated to a proper température for welding; whilst
the same is at a welding heat it is placed between the dies in my apparatus of the
same section of the spring head, when it is pressed and welded together into the
proper shape and thickness required.
With suitable dies the machine may be used for the making of scrolls and joints
also hitherto made by hand.
I wish it may be distinctly understood that I do not confine myself to the exact
details herein-before described, as the operation may be considerably varied
without departing from the characteristic features of my improvement, which
consists of cutting, pressing, and punching the various pieces required to form a
spring head, and welding the same together with the apparatus herein described.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Jonas Woodhead in the Great Seal Patent Office on the 28th July
1876.
JONAS WOODHEAD, of Westholine Street, Bradford, in the County of York,
Spring Manufacturer. "IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR
MAKING CARRIAGE SPRING HEADS,"
The object of my Invention is to construct an apparatus in such a manner that
an attendant can forge any number of heads to one uniform size, and give the same
a better and much neater finish, and in considerably less time than when made by
the ordinary method.
I accomplish my object in the following manner-I construct a strong metal
frame, the top or upper portion of which is prepared with suitable bearings for the
reception of a shaft. On this shaft is turned one or more eccentrics, and on one
end of the said shafts is placed a fly wheel of the required diameter and weight to
maintain the momentum of the apparatus when in motion. Connected with the
said shaft and fly wheel is a clutch motion in order that the eccentrics may only
make the number of revolutions required by the attendant; the power is trans-
mitted to the machine by a belt from a suitable pulley to the fly wheel. To each
of the eccentrics on the shaft I attach a block by means of connecting rods and
eccentric clips. These blocks work in slides, and the bottom or under side of the
blocks are prepared to receive punches or dies of various sections. Opposite to
these punches or dies, and secured to the framework of the apparatus are sockets,
with holes slightly larger than the section of the respective punches. Between
these said punches or dies and sockets the bar of steel or iron is placed to be cut
or punched to the required sizes and shapes for the spring heads. The punches
are arranged in such a manner (which will be seen on reference to the Drawings)
as to leave the pieces of steel or iron that are cut with fringes or scarfs on, in
order to facilitate the welding of the same to the spring plate after the various
parts have been cut or punched that are required to form a spring head; the same
are attached to the spring back and heated to a proper temperature for welding,
whilst the same is at welding heat it is placed between the dies of my apparatus
of the same section as the spring head, when it is pressed and welded together into
the proper shape and thickness, the fringes or scarfs left on the pieces cut forming
the heads compensate for the waste of the iron or steel through being heated to
welding.
With suitable dies the machine may be used for the making of scrolls and
joints.
Having now described the nature of my Invention, and the manner in which the
same is to be performed, I wish it to be understood that I do not confine myself to
the exact details herein described and represented in the Drawings, as the
operation may be considerably varied without departing from the characteristic
nature of my Invention, which consists of cutting or punching the various pieces
required to form a spring head in such a manner that the pieces have fringes or

page_text: scarfs left on to facilitate the welding, together with the apparatus herein described
the parts of which are arranged or combined and worked essentially in the manner
herein-before described and illustrated in the accompanying Drawings.
I will now describe the accompanying Drawings in which like parts are
indicated by like letters and figures.
scarfs left on to facilitate the welding, together with the apparatus herein described
the parts of which are arranged or combined and worked essentially in the manner
herein-before described and illustrated in the accompanying Drawings.
I will now describe the accompanying Drawings in which like parts are
indicated by like letters and figures.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a front elevation of my apparatus.
Fig. 2 is an end elevation, showing the double punches.
Fig. 3 is an end elevation, showing clutch gear.
Fig. 4 is a plan of Fig. 1 through section line A, B.
Fig. 5 is an elevation of a punch for cutting out the ears of the spring head;
Fig. 6 is an end view of the same.
Fig. 7 is the punch socket.
Fig. 8 is an elevation of a punch for scarfing the cross bar to be welded to the
spring back and the ears; Fig. 9 is an end view of the same.
Fig. 10 is a plan of the socket; Fig. 11 is an elevation of the same, showing the
V recess for the cross bar.
Fig. 12 is a cross section of the top block for welding the various parts of the
spring head together; Fig. 13 is the bottom block for the same.
Fig. 14 is a longitudinal section of Figs. 12 and 13.
The framework of my apparatus is indicated on the Drawings by the letters
A, A, and rests upon the feet B, B. The shaft C is mounted in suitable journals
formed in the framework. Upon this shaft are turned the eccentrics D. On one
end of the shaft C is a clutch box E with two studs E' passing through the arms
of fly wheel F. At F¹ the fly wheel and clutch box run loose on the shaft, which
which is driven by means of a strap on the periphery of the wheel. Between the fly
wheel and the framework is a disc G secured to shaft C, with holes corresponding
to the studs E¹. The clutch is put into gear by pressing down the foot lever H
which is connected to lever J by connecting rod K. The lever J is centred on &
stud in bracket L secured to framework. It will be easily seen that when the fly
wheel is in motion and the clutch put into gear that the eccentrics will cause the
blocks M connected to shaft by rods M¹ to move in a vertical direction in slides N.
The punches or dies are fitted to the blocks at M. The iron or steel is placed
between the punch and the socket O and cut to the required shape, after which they
are put together, heated to the proper temperature, and put between the dies 0¹
and O2 and welded to the shape required. The punches P and P¹ are for punching
the square and round holes in the ears after the same are welded to the spring back.
S is a block inserted in rod M¹, and is secured thereto by means of left and right-
hand screws Sand S2; by turning S, the length of connecting rod may be regulated
to a nicety. Fig. 5 is an enlarged view of a punch cut at Q and Q¹ to the section
for forming the fringes or scarfs to facilitate welding. Fig. 8 is another punch
formed with a projection at R for scarfing the cross bar in order to fit the scarfs
formed in the ears by the punch shown in Fig. 5.
In witness whereof, I, the said Jonas Woodhead, have hereunto set my
hand and seal, this Twenty-fifth day of July, in the year of our Lord One
thousand eight hundred and seventy-six.
Signed, sealed, and delivered by the said
Jonas Woodhead in the presence of
JOHN WAUGH,
Engineer & Patent Agent,
Bradford, Yorks.
JONAS WOODHEAD. (L.S.)