Improvements in Machines for Making Hooked Bolts and Cam Levers Designed to be Applied as a Rail Joint Fastener.
Year: 1889

page_text: Date of Application, 28th May, 1889-Accepted, 28th Sept., 1889
COMPLETE SPECIFICATION.
Improvements in Machines for Making Hooked Bolts and Cam
Levers Designed to be Applied as a Rail Joint Fastener.
1, NELSON ROWEN of Rockvale, Fremont County, State of Colorado, United States
of America, Carpenter do hereby declare the nature of the said invention and in what
manner the same is to be performed to be particularly described and ascertained in and
by the following statement:-
My invention has relation to machines for manufacturing railway-rail-joint
fasteners, such as are described and illustrated in the application by myself jointly with
Albert Evans for British Letters Patent filed on the 9th day of March 1889 under
number 4184.
The object of my present invention is to produce a machine of the class described
which is of extremely simple construction, is compactly and strongly made; which is
capable of producing continuously the parts of my fastening and furthermore requires
the services of but two attendants in its operation.
My invention consists in the construction arrangements, and combinations of parts
hereinafter fully described and claimed and illustrated in the accompanying drawings
in which latter-
Figure 1 is a front elevation of the machine showing the parts in the position
they assume when ready to receive the piece of metal from which the cam lever is
produced.
Figures 2 and 3 are opposite end elevations thereof.
Figure 4 is a detail perspective view of the pivoted die for forming the cam levers.
Figure 5 an underside view thereof.
- Figure 6 is a detail perspective view showing the arrangement of the plunger levers
or blocks for cutting, bending and heading the bolts used with my fasteners together
with the operating levers therefor.
Figure 7 is a horizontal section on the line x-a of Fig. 1 of the block wherein
the looked bolts are formed.
Figure 8 is a top plan view of the lower stationary die for forming the cam levers.
Figure 9 is a detail perspective view of one of the cam levers, and
Figure 10 a like view of one of the hooked bolts.
Inasmuch as the construction of the parts of my improved fastener i.e. the cam
lever and hooked bolt, as well as the mode of application of said fastener to the fish
plate of a railway is fully described and illustrated in my before mentioned applica-
tion for British patent, it will therefore be unnecessary for me to herein describe the
same in detail, except in so far as it may be necessary to do this in describing the
mode of operation of the machine.
In arranging my machine for operation I provide a suitable supporting table or
frame A upon which the base plate B of the machine is mounted and firmly secured.
At one end of the base plate B and extending transversely across the same is
arranged a stationary die (which, as shown in Fig. 8 slightly tapers from front to
rear; said die is provided with the vertical side walls or flanges è and the vertical
intermediate walls or flanges c', forming the narrow space or passage ² and the wider
passages or spaces on either side thereof, said die is also provided, near its front
end with the vertical opening c which registers with corresponding openings in the
base plate and table of the machine for a purpose presently described.
Pivoted upon a pivot c (Fig.. 2) passing through the die Cat its rear end and
adapted to co-operate with said die in forming the cam lever of my fastener, is a die D,
which as shown also in Figs. 4 and 5 is made slightly tapering from front to rear and
is provided with the wide vertical side walls or flanges d and the narrow vertical
central wall or flange d', the width of said walls d corresponding with the width of

page_text: the spaces of the stationary die, and the width of the central wall d¹ corresponding
with that of the space c², the two dies being arranged relatively to each other in such
manner that said pivoted die D may have a vertical movement within and in respect to
said stationary die, as shown in Figs. 1 and 2, and for this purpose I pivot said die D
in the manner before described.
The under face of the central wall or flange d¹ of die D has a contour corresponding
to that of the curved edge f of the cam lever F shown in Fig. 9, while the floor of
the die C is rectilinear to correspond with the rectilinear edge f of said cam lever.
When the die D is operated the said curved face of wall and bottom of the die C
co-operates to impart a wedge shape to the cam lever F, shown in Fig. 9, the curved
edge of said cam lever being formed by the curved face of the wall d' and the
rectilinear edge f2 by the bottom of the die C.
The under face of each of the side walls d of the die D is, as shown in Fig. 5
provided with a cam shaped recess e of a shape corresponding to that given to the
cam lever, the cam shaped recess of one of the side walls being adapted to produce a
"left "
"right" cam lever, while the other is adapted to produce a
cam lever as will
be readily seen. Each of said side walls is also provided with an annular boss or
projection el which corresponds in size with the openings in the lower die and
when said die D is operated, serve, in conjunction with said openings to punch annular
pieces from the pieces of metal to form the eyes or openings for the passage of the
shanks of the bolts hereinafter described, the punched pieces of metal falling through
the aligned openings in the base plate and the table.
Each recess e is, hollowed out in such manner that the deeper portion thereof
is toward the front and becomes gradually shallow toward the rear, whereby to
form the thicker portion f³ and the thinner portion f of the cam lever, as will be
understood.
The front edges d₁ of the recesses serve as cutting edges for giving the rounded
edge to the cam lever while their rear edges d' serve to cut the pieces of
metal off to the proper length.
For forming the hook bolt shown in Fig. 10 I employ the following means,
reference being had more particularly to Figs. 3, 7 and 8.
E indicates a block secured upon the base plate B at the left hand end thereof;
said block is provided with a transverse annular passage or opening E¹ of a diameter
corresponding with the diameter of the bolt which is to be produced. At its rear
end said opening is squared, as at E2 which is designed to form the squared
portion of the bolt (Fig. 10) and in rear of said squared portion E³ said opening El
is formed into an enlarged squared portion E³. The block E is also provided with
the longitudinal rectangular opening E* which communicates at its inner end with
the annular opening E¹.
Within the opening E* is fitted and adapted to reciprocate a block or lever E³, the
inner end of which is hollowed out to form a semi-cylindrical recess E to correspond with
the curved surface of the bolt whereby when the lever is forced inward its inner end
will firmly grip and hold the bar of metal while the same is being headed and the
hook formed thereon, as presently described.
Within the squared portion E³ of the opening E' is fitted and adapted to reciprocate
a rectangular lever or block E7, the function of which is to form the head upon the
bolt and for this purpose its inner end is provided with a hemi-spherical or cup-
shaped recess Es which when said lever is forced inward, will swage the head g₁ upon
the bolt and at the same time will, in conjunction with the squared portion E² of
the opening E¹ in the block, swage the squared portion 9 on said bolt.
For the purpose of cutting off the bar of metal to the proper length for the bolt
and at the same time forming the hook 92 on the latter I provide the following
means.
Upon the upper face of the block E is secured an upright F¹ which is provided
with the intersecting openings F2 which form guide ways for the arms F³ of a
vertical plunger F4 (Fig. 7).
The lower end of one of the arms F3 i.e. the one toward the front of the machine

page_text: is somewhat longer than the others and its lower end is cut away or beveled to form
a sharp cutting edge F³.
Said arm is adapted to fit and reciprocate within a vertical opening in the
block E which communicates with the opening E¹. When the plunger F4 is moved
downward its cutting edge F³ will sever the bar of metal to form the bolt of the proper
length. Upon its continued descent the bevel on the lower end of said arm will
bend the end of the bolt downward forming the hook g² (Fig. 10).
In order that the bolts as fast as formed may be removed from the block E and
thereby cause no delay in the operation of forming the bolts, the bed plate of the
machine and the table are provided with openings, which register with the opening
in the block so that the completed holt can fall through said openings from the
gripping and forming levers so that the operation is continuous, a complete bolt being
formed at each complete reciprocation of said levers.
In the formation of the bolt the various levers above described for acting upon the
bar of metal, are so operated that the gripping lever or block E³ will be first moved
inward to grip the bar of metal, after which the heading lever and the cutting and
bending lever are simultaneously operated to perform their respective functions. The
several levers then simultaneously release the completed bolt which drops down!through
the aligned openings in the bed plate and table above mentioned, into a suitable
receptacle.
For operating the pivoted die D to form the cam levers, as well as the blocks or
levers E, E, F to form the hooked bolts, any suitable arrangement of driving
mechanism may be employed, and furthermore said die may be operated independently
of the levers for forming the hooked bolts if this is desired. I have, however, devised
a mechanism which is simple and at the same time serves to operate said devices in
unison an arrangement which I prefer.
This mechanism I will now describe, reference being had more particularly to
Figures 1, 2, 3, 6 and 7. Rising from the bed plate A of the machine is a standard G,
the upper end of which serves as a bearing for one end of a shaft H the other end
of which has its bearings in the upper end of the upright F¹ before described.
Rigidly mounted upon one of the projecting ends of shaft H is a crank wheel I, upon
the crank of which is pivoted one end of a lever J whose lower end is pivoted
between ears j projecting from the upper face of the die D. Upon the other end of
the shaft H is secured a like crank wheel K upon the crank k of which is pivoted one
end of a lever L whose lower end is pivoted upon a pin projecting laterally from one
of the arms F3 of the plunger F¹.
Upon the shaft H intermediate of the standards F¹, G, are mounted the belt
pulley M, fly wheel N and a wheel O, which is provided in its periphery with a cam
groove P. Qindicates a lever pivoted midway of its ends in an arm q projecting
laterally from the upright F¹. The upper end of said lever carries a roller q which
rides in the cam groove P, and its lower end is pivoted to one end of the gripping
block or lever E.
To the rear arm F³ of the plunger F4 (see Fig. 3) is pivoted one end of a lever R,
whose other end is pivoted to the upper end of a lever S which passes through a slot
cut in the transverse pieces of the frame, and is pivoted therein, the lower end of
said lever S being pivoted to the rear projecting end of the heading lever E'.
Before describing the operation of my machine I would state that in practice the
driving shaft H is rotated very slowly in order that the passes of the metal into the
machine and the withdrawal of the completed parts may be carried on uniformly and
without interruption and to insure perfect articles when completed.
The operation of my machine may be briefly described as follows: Motion is com-
municated to the shaft H and when the parts assume the position shown in Fig. 1, a
flat piece of metal of the proper heat, and of a thickness and size appoximating the
thickness and size of the cam lever which is to be produced is passed into the narrow
opening of the die C. The die D being then lowered compresses the metal into a
wedge shape having the curved edge fand the rectilinear edge f³.
The piece of metal is then withdrawn and laid flatwise in either the right or left

page_text: hand space c³ (according as it is desired to produce a right or left hand lever) and
upon the next descent of the die D it is reduced to the proper thickness, an opening f
is punched therein and at the same time the edges d', ds of the recess cut the bar of
metal off to its proper length after which the completed lever is withdrawn and the
operation repeated upon another piece of metal to form another cam lever.
Simultaneously with the formation of a cam lever, a round piece of metal of the
proper heat and diameter is passed through the opening E' a sufficient distance by
another attendant; the gripping block then moves inward and grips the same, the
plunger F is then lowered causing the cutting and bending arm or lever F³ to be
moved downward and the heading lever inward, whereby the metal is first cut the end
of the severed portion bent and simultaneously therewith the head and squared portion
of the bolt swaged thereon by the said heading lever, after which the three levers are
caused to simultaneously release the bolt which is now complete and drops through
the aligned openings in the bed plate and table.
It will be seen that a complete bolt is produced at each revolution of the driving
shaft while it requires but two revolutions of said shaft to complete one of the cam
levers..
My machine as will be seen is of extremely simple construction, is very compactly
and strongly built and requires the services of but two workmen in its operation.
Having now particularly described and ascertained the nature of my said inven-
tion and the manner in which the same is to be performed I declare that what I
claim is:
1. In a machine of the class described, the combination of the stationary die C having
the vertical walls or flanges c, c¹, of the pivoted die D having the vertical walls
or flanges d d', and the cam shaped recesses e, on the underfaces thereof, as
described, said dies being adapted to co-operate in the manner described.
2. In a machine of the class described, the combination with the stationary die C,
having the vertical walls or flanges c c and the openings c, of the pivoted die D,
having the vertical walls or flanges d d¹, the cam shaped recesses e, and the annular
bosses or projections e¹, said dies being adapted to co-operate in the manner described
for the purpose specified.
3. In a machine of the class described, the combination with a block E provided
with the transverse opening E¹ shaped as described, the longitudinal opening E and
the vertical opening communicating with said opening 'E', of plunger levers or blocks
adapted to operate within said openings and act upon a piece of metal passed through
the opening E in the manner described.
4. In a machine of the class described, the combination with the stationary die C,
and the pivoted die D, constructed and adapted to co-operate in the manner described,
the block E provided with the transverse, longitudinal and vertical openings described,
and plunger levers or blocks operating within said openings, of mechanism for simul-
taneously operating said pivoted die and plunger levers, in the manner described for
the purpose specified.
Dad thin 30th
1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patert Agents.