A New or Improved Machine for Welding Flanges on Iron or other Metal Tubes.
Year: 1889

page_text: Date of Application, 29th Apr., 1889
Complete Specification Left, 29th Jan., 1890-Accepted, 1st Mar., 1890
PROVISIONAL SPECIFICATION.
A New or Improved Machine for Welding Flanges on Iron or other
Metal Tubes.
I, JOHN WOTHERSPOON, of the Clyde Tube Works, Coatbridge, in the County of
Lanark, North Britain, Tube Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This Invention which relates to a new or improved machine for welding flanges on
iron or other metal tubes, has for its object to facilitate the said welding operation and
to effect the same in a more efficient manner than hitherto.
My Invention consists as follows:-1 form a frame of cast iron or other metal having
provision for carrying the necessary hammer, cress block, cress block wedge, springs,
cods, lovers, and also having two upright columns, or pillars, for carrying the driving
shaft flywheel, pulley, and connecting rod; This connecting rod being keyed or
placed eccentrically upon the driving shaft for the purpose of giving the hammer its
necessary movement. The said hammer being mounted in the horizontal plane and
pivotted at its one end, the other end being the hammer proper. The end of the
connecting rod works loose in a suitable groove or recess formed on the hammer near
its head, and the said hammer is kept close against the end of the connecting rod by
means of a suitably mounted cod, and spiral or other spring, which works in the said
frame, underneath the hammer, thus allowing the hammer to expend its blows
downwards against the tube to be welded. The tube and flange to be welded, is held
in a suitably grooved or recessed cress block, which moves up and down in V or other
shaped grooves fastened at each side to the frame, by holts, pins, or their equivalents.
This up and down movement is obtained by mounting underneath the said cress block,
a suitable wedge which can be pulled up, or pushed down an inclined plane on bottom
of frame, by means of a mounted lever, or handle, at the one end of a cross shaft
carried in brackets on said frame and at the other end of said shaft a lever which is
attached to the end of said wedge, by one or more links and pins; This wedge works
against a mounted cod in the bottom of said cress block, preferably formed by boring
a cylindrical hole, or small cylinder in the said cress block, and into which is placed a
packing of india rubber, or other yielding material, against which a small piston having
a short stem or spindle presses. The said stem or spindle operates through a suitable
gland or cover secured to the cress block, the end of said spindle working against the
said wedge.
When a tube is to be welded, (after having been reduced in diameter at its end,
and the flange fitted on this reduced part) it is placed on the cress block, the hammer
acting upon the inside of the tube, and the cress block with tube and flange is fed up
towards the hammer by means of the said wedge and lever, until the inside of the tube
has gained its original diameter, and the flange welded.
COMPLETE SPECIFICATION.
A New or Improved Machine for Welding Flanges on Iron or other
Metal Tubes.
I, JOHN WOTHERSPOON of Clyde Tube Works Coatbridge in the County of Lanark,
North Britain Tube 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:-
This Invention which relates to a new or improved machine for welding flanges on

page_text: iron or other metal tubes, has for its object to facilitate the said welding operation and
to effect the same in a more efficient manner than hitherto.
In order that my said Invention may be more readily understood and easily carried
into effect I will proceed to describe the same with reference to the accompanying
sheets of drawings. Figure 1, sheet 1, is a front elevation and Figure 2, sheet 2, a
side elevation of my machine.
In carrying out my said Invention. I provide a suitable frame or standard A, made
of cast iron or other metal, upon which is mounted or carried the two upright
columns B, B', cress block (, which bas formed on its top side a suitable semi circular
recess c, for placing the flange to be welded into, as also a suitable opening c¹ for
allowing the hammer head to work clear of the said cress block. This cress block is
capable of moving up and down in the grooves or slides D, which are fixed to the
frame A, by pins, studs, or their equivalents, the up and down motion to the cress
block being obtained by mounting a suitable cod arrangement C, on the underside of
the cress block C, this arrangement consisting of the piston shaped cod c², which works
against a suitable india rubber spring, or other packing c³, inside the cylindrical hole,
which is provided with a suitable screwed gland or cover c, bored so as to allow of the
lower end of the piston cod to work against the top side of the tapered wedge E,
which is capable of being moved horizontally to and fro, by means of the lever and
link arrangement F over the top of another tapered wedge E, the height of which
may be altered as required by means of the filling in piece F, being thicker or thiner.
The lever arrangement F, consists of one or more links, connected at their one end
to the end of the top wedge E, by suitable means and connected at their other ends to
the top end of a small lever fl, which is mounted on the one end of the horizontal
shaft, carried in suitable brackets a a', formed on the main frame A, this shaft f²,
having mounted on its outer end a suitably hand lever f³, which is provided with a
tail piece 4, which works against a suitably screwed pin f³, carried in a suitable
bracket f, so as to regulate the height of the cross block's upward movement.
The two upright columns B, B₁, are fixed to the frame A, by bolts or their
equivalents b, and are provided with the necessary bearings 61, for carrying the
driving shaft H, which has mounted on its one end a suitable driving pulley J, and at
its other a suitable fly wheel K, this shaft being formed with an eccentric or cranked
part L, which works in the top end m, of the connecting rod M, the lower end m', of
which is formed as a part of a circle which works into a correspondingly circular
groove n, provided on the top edge of hammer N, which is pivoted at its one end to
the columns B, B₁, by means of a suitable pin or stud n', the other end n², of this
hammer is formed as the hammer head proper, having its lower side n³, formed with a
curve corresponding to the inside diameter of the tube being welded. This hammer and
connecting rod being always kept against the eccentric L, by means of mounting a
suitable spiral or other spring G, in the frame A immediately underneath the
hammer N, this spring having mounted on its top end a suitable curved cod_G¹,
which works against the lower side of the hammer N; the pressure of the spring G on
the hammer being regulated by washers g.
I
The whole arrangement being such that on the tube and flange to be welded
being ready (that is after the end of the tube has been reduced in diameter and the
flange fitted on this reduced. part, and both heated to the required heat) they are
placed in the recess c, of the cress block C, suitable guide pieces C³, being
attached thereto so as to facilitate the placing of the flange and tube. If desired
may mount suitable filling in pieces C2, in the said. recess c, so as to regulate the
exact spot to receive the blows from the hammer. head. n³, which expends its.blows
downwards on the inside of the tube, as the operator, by means of the lever arrange-
ment F, and wedges E, E, and E2, raises up the cress block with the tube and flange, till
the inside of the tube has gained its original diameter and the flange is welded on, when
the cress block is again lowered and is ready for another welding.
It will be seen from the foregoing that the machine may be used for various sizes
of tubes and flanges, by altering the sizes of various parts, namely the cress block

page_text: recess c, filling in pieces C³, cod arrangement C', filling in wedge E², lever and
link arrangement F, and hammer N, with washers g, under spring G.
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
claim is.
First. In welding flanges on iron or other metal tubes the employment of a machine
or apparatus whereby the hammer is caused to expend its blows on the inside of the
tube being welded, substantially as hereinbefore described.
Second. The general arrangement, combination and construction of the various
parts constituting my new or improved machine for welding flanges on iron or other
metal tubes, all substantially as and for the purposes hereinbefore described and shewn
in the accompanying drawings.
Third. In machines for welding flanges on iron or other metal tubes, the employ-
ment of an adjustable pivotted hammer N eccentrically driven shaft L, connecting
rod M, adjustable spring arrangement G, and the connections of the said parts all
substantially as and for the purposes hereinbefore described & shewn in the accom-
panying drawings.
Fourth. In machines for welding flanges on iron or other metal tubes the
employment of an adjustable cress block C, filling in piece C², slides D, adjustable
cod arrangement C₁, tapered wedges E and E¹, adjustable filling in piece E³, adustable
lever and link arrangement F, and the connections of the said parts, all sub-
stantially as ant for the purposes as hereinbefore described & shewn in the accom-
panying drawings.
Dated this 28th day of Janv
1290
January
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.