Improvements in Metal Cutting Machines.
Year: 1894

page_text: Date of Application, 20th Mar., 1894-Accepted, 21st Apr., 1894
COMPLETE SPECIFICATION.
[Communicated from abroad by DAVID HAMMOND, of Canton, in the County of
Stark and State of Ohio, United States of America.]
Improvements in Metal Cutting Machines.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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:-
The present invention relates to shape metal cutting machines, and it consists in
the different parts and combination of parts hereinafter described.
In the accompanying drawing,
Figure 1 is a perspective view of the machine, showing an I beam or girder
placed in proper position to be cut, said I beam being shown in dotted lines.
Figure 2 is a view showing a portion of the reciprocating plunger, shell or casing,
also showing a portion of the body of the machine, and illustrating a modification
of the plunger head with reference to the cutting blades, and their arms.
Figure 3 is a transverse section through line xx, Figure 2.
Figure 4 is a vertical section of the cutting blade.
Figure 5 is a transverse section of the cutting blade, and
Figure 6 is a bottom end view of the said cutting blade.
Similar letters of reference indicate corresponding parts in all of the figures of
the drawing.
A represents the body of the machine, which is constructed in the ordinary
manner, reference being had to properly attaching and adjusting my improvements.
The casing or shell B is provided with the ordinary machinery to impart an up
and down movement to the plunger head C, which machinery is operated by the
wheel D, and its shaft D'. To one side of the wheel D, and upon its shaft D' is
located the interlacing clutch a, which clutch is operated to throw the plunger C
together with its attachments in and out of gear in the ordinary manner.
To the plunger C is attached the sliding head E, to which sliding head is
securely attached the cutting blade F, by means of the socket or arm G, which is
preferably formed integral with the head E.
For the purpose of causing the head E, to follow the up and down movements
of the plunger C, the said bead E is provided with the grooves c, which grooves
embrace the sides of the plunger head C, substantially as illustrated in Figure 1.
To the socket or arm G, is pivotally attached in any convenient and suitable
manner the eccentric pitman or arm H, which arm is connected to the eccentric I
in any convenient and well known manner.
To the eccentric shaft J, is attached the wheel K, which is rotated together
with the eccentric by means of the pinion K, said pinion being securely attached
to the shaft K To the opposite end of the shaft K2, is attached the bevelled
pinion K, which bevelled pinion meshes with the bevelled pinion K', said bevelled
pinion K, being securely attached to the power shaft L which power shaft is
provided with the power pulleys b.
To the power shaft L is attached the pinion d, which is for the purpose of
communicating rotary motion to the wheel D, which wheel together with its shaft
imparts a reciprocating movement to the plunger C as above stated.
It will be understood that various styles of gearing can be used to impart rotary

page_text: motion to the eccentric shaft J, without departing from the nature of my invention,
inasmuch as the only object to be accomplished is to impart rotary inotion to a
shaft that imparts a reciprocating movement to the pitman H.
The eccentric shaft J is provided with an ordinary interlacing clutch a', which
clutch may be operated by the treadle a³, and the bars attached thereto; but it
will be understood that various devices can be used for operating the interlacing
clutch a' without departing from the nature of my invention, as the only object to
be accomplished is to throw the eccentric I in and out of gear for the purpose
hereinafter described.
To the bed M is securely attached in any convenient and well known manner,
the die plate N, said die plate being provided with the flanges N', which flanges
hold the dies O in proper position, said dies being located substantially as shown
in Figure 1, and for the purpose of assisting in holding the dies, suitable clamping
bolts may be employed.
For the purpose of providing a means for cutting the flanges of I beams or
channel bars, the dies O, are provided with the vertical edges O', which vertical
edges are located substantially as shown in Figure 1. It being understood that
the vertical edges O' are to be formed at each end of the dies O, for the purpose
hereinafter described. To the socket arm G is rigidly attached the cutting blade F
by means of the bolts g or their equivalents. For the purpose of providing a
cutting blade that will be easily operated as hereinafter described, and at the same
time provide a cutting blade having three cutting edges, the central portion of
said blade is formed somewhat thinner than the edges. It will be understood
that the lower edge is to be swaged out, so that it will have the appearance at its
bottom end shown in Figure 6. The cutting blade F as shown in Figure 1 is slightly
concave at its bottom end.
In use a cutting blade, such as F is attached to the socket G, by means of the
bolts 9 or their equivalents, and the bar or beam designed to be cut is placed in
the position illustrated in the dotted lines Figure 1, when a down stroke is given
to the cutting blade, which stroke cuts the web on the beam; after the cutting
blade has reached its lowest point and before it has been elevated the treadle a³, is
pressed downward, thereby imparting a rotary motion, by means of the interlacing
clutch to the eccentric shaft J, which in-turn gives the cutting blade F, an horizontal
reciprocating movement by means of the pitman H, and as said cutting blade is
moved in one direction the flange at the side of the cutting edge will be cut, and
as the cutting blade is moved in the opposite direction, the opposite flange
of an I beam or chanuel bar will be cut thereby completely cutting off the
beam.
It will be undetrsood that one complete revolution of the eccentric will move
the cutting blade F horizontally towards each of the side flanges, thereby cutting
both flanges of an I beam or channel-bar.
1
It will be understood that by my peculiar arrangement I am enabled to give two
distinct and independent movements to the cutting blade F; one of said move-
ments being a true up and down, and the other a true horizontal movement, thereby
providing a means for cutting the webs and flanges of I beams or channel bare, or
other irregular shaped beams, without moving or changing the position of a beam
or bar after it has been once placed in position.
In Figures 2 and 3, a modified form is illustrated, which consists in attaching
two downwardly extending arms A' and A' to the plunger head C, and attaching a
cutting blade to each of said arms. The cutting blade B' is designed and calculated
to cut the web of an I beam or channel-bar, after which the beam or bar is placed
in the position illustrated at X, which position brings the cutting blade B' through
the cut C, after which the cutting blade B, is given an up and down movement;
the down movement cuts the lower flange, and the up movement cuts the upper
flange, thereby completely cutting the beain.
It will be understood that in order to easily enter the cutting blade B' through
the opening or cut C', said cutting blade should be formed somewhat thinner, than

page_text: the cutting blade B'. For the purpose of providing for the up cut, the dies B'are
provided, and are located directly above the lower dies B*.
For the purpose of securely holding the upper dies against upward pressure
during the time the up cut is made, the block B is provided, and die-bar B placed
directly under the bottom or under side of the bar or block B.. It will be
understood that the block B, may be formed integral with the body of. the
machine, or it may be made separate, and attached in convenient and well known
manner.
The die-bar B may be supported by means of clamping bolts or rods attached
to the body A and to the bar B. In Figure 2 a portion of the body is shown for
the purpose of illustrating that the upper dies B together with their bar, should
come within the throat of the body A.
It will be understood that the block B, can be dispensed with and the die-bar B
located directly against the bottom or under side of the throat. It will also be
understood that various sized blocks, such as B' can be used.
As the horizontal stroke of the blade F is made, the head E together with its
socket G, slides back and forth upon the plunger head C, this construction being
illustrated in Figure 1, and is omitted in the construction shown in Figures 2
and 3.
For the purpose of providing for cutting various sized beams, different sized
cutting blades and dies can be adjusted to the machine proper.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :—
1. The combination of the body A, provided with the casing or shell B, having
located therein a reciprocating plunger provided with a sliding head, having an
arm or socket carrying a cutting blade, the pitman H, pivoted to the socket G, and
means for imparting rotary motion to the eccentric, and dies, substantially as and
for the purpose specified.
2. In machine for cutting I beams or channel bars, a body provided with a
shell or casing, a reciprocating plunger carrying a sliding head provided with a
cutting blade and means for imparting vertical and horizontal reciprocating
movement to the cutting blade, and dies, substantially as, and for the purpose,
specified.
3. The combination of a body provided with a shell or casing having located
therein a reciprocating plunger, carrying the arms A' and A³, cutting blades B'
and B, and dies B, substantially as and for the purpose, specified.
4. The combination of the body A, provided with a casing or shell having
located therein a reciprocating plunger provided with a head carrying a cutting
blade, an eccentric arm pivoted to the arm or socket, an eccentric, and means for
imparting rotary motion to the eccentric, substantially as, and for the purpose,
specified.
5. In a machine for cutting I beams, channel bars and other irregular shaped
beams, a reciprocating plunger carrying a cutting blade, having three cutting edges,
and formed somewhat thinner in its central portion, and dies, substantially as, and
for the purpose, specified.
6. The combination of a reciprocating plunger carrying the blades B' and B*
and dies B and B the dies B' located above the dies B, substantially as, and for
the purpose, specified.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.