Improvements in Welding Machines.
Year: 1895

page_text: Date of Application, 15th Oct., 1895-Accepted, 16th Nov., 1895
Improvements in Welding Machines.
I, THOMAS FITCH ROWLAND, Jr., of 170 Keap Street, Brooklyn, in the County
of Kings and State of New York, United States of America, Manufacturer, 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 improvements relate to welding machines, and particularly to such
machines when adapted to operate upon thick blanks.
One of the essential objects of the present invention, is to provide means whereby
the welding rolls and the blank carrying carriage of a welding machine will be
operated by mechanism positively connecting the same, the carriage having a linear
speed the same as the circumferential speed of the welding rolls.
Referring to the drawings accompanying this Specification,
Fig. is a side elevation view of one form of mechanism embodying my
invention.
Fig. 2 is an end elevation, on a larger scale, from the right hand end of Fig. 1,
the furnace structures being removed and the lower arm of the machine being cut
in vertical cross-section through the axis of the lower roller.
Referring to these drawings in detail, the numeral 1 represents the ground work
upon which this machine is supported. 2 and 3 represent, respectively, the upper
and lower arms or horus of the machine, which arms are joined together at their
base 4 and are of the usual U-shape, or are arranged parallel to each other in any
suitable manner. These arms bear the welding rolls 5 and 6, the latter roll being
non-adjustably journaled in the lower arm. The upper roll 5 is journaled in the
traveling block 7 which slides vertically on ways on the end of the upper arm
and is attached to piston 8 of the hydraulic cylinder 9 fixedly secured in vertical
position at the end of the upper arm. The pipes 10 and 11 supply the cylinder
with suitable motor fluid under pressure. By these means the upper roller is
made to move to or from the lower roll, to apply to the blank being operated on by
the rolls any suitable welding pressure. 12 and 13 represent furnaces for heating
the blauk, which furnaces may be supported in any suitable manner.
14 represents the blank carriage, 15 (in dotted lines) indicating the blank secured
and carried thereou. This carriage runs on rails 16, and is provided with a
bracket 17, the lower end or threaded sleeve 18 of which runs on the screw rod 19,
journaled in the standards 20 so as to have rotary motion but not lengthwise motion.
This screw rod carries the beveled gear 21, which meshes with the gear 22 on the
driving shart 23 which is operatively connected to any suitable power mechanism,
as the electric motor 24. Gear 25 on the driving shaft meshes with and operates
the vertical shaft 26, which carries a worm 27 meshing with the screw wheel 28
mounted on the shaft 29 of the upper roll, which worm is of a length greater than
any required vertical adjustment of the upper roller, whereby the adjustment of
said roller does not effect the meshing relation of the worm with the screw wheel.
The size of the various gears and the arrangement of the threads of the screw
shaft and the worm shaft are such that the peripheral speed of the upper roller will
be the same as the linear speed of the blank carriage.
By these means it is assured that the blank mounted on the carriage and running
between the welding rolls being operated upon by the same, will be positively
forced between the rolls and without slipping. It is well understood in this art,

page_text: that if the welding rolls be alone relied upon to effect the feed of the blank, then
oftentimes the welding rolls will drag or slip on the blank, In cases where the
blank is driven by power controlled separately of the means or power for driving
the rolls, then difficulty is likely to ensue by reason of the speed of the blank
varying from the speed of the rolls. By the mechanism here shown, the blank is
forced to enter between the rolls, which also act with corresponding speed to draw
the blank, and any unusual resistance at the seam of the blank is readily overcome
without distorting the blank or springing the seam. At the same time, it results
that welding together the edges of the blank can by such a machine be more
perfectly and rapidly accomplished than by mechanism in which the welding rolls
are driven independently of the blank carriage.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to bo performed, I declare that what ]
claim is:
1. In combination in a welding machine, a pair of welding rolls, blank supporting
carriage, and driving mechanism for operating one of the rolls and also the carringe,
so that the feed movement of the blank will be the same as the peripheral speed of
the welding rolls, substantially as set forth.
2. In combination in a welding machine, the arms 2 and 3, one carrying the
welding roll 6, and the other carrying the roll 5 and mechanism for adjusting the
same, a blank feeding carriage, and driving mechanism for simultaneously
operating the adjustable welding roll and the carriage so that the blank is
positively fed to the rolls in accordance with their peripheral speed, substantially
as set forth.
Dated this both any of October 1699.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.