Improvements in Tube-drawing Machines.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Tube-drawing Machines.
I, JOHN MATHEW RILEY, of Kearny Avenue, Kearny, Hudson, State of New Jersey,
United States of America, Manufacturer, my Post Office address being 141 Kearny
Avenue, Kearny, Hudson County, New Jersey, United States of America, do hereby
declare the nature of this invention and in what manner the same is to be performed
o be particularly described and ascertained in and by the following statement :-
The object of this invention is to facilitate the drawing out, or lengthening of metal
tubes in a rapid manner, with ease of manipulation and adjustment and a saving of
expense.
The invention consists of the improved triblet and draw head and the combination
and arrangement of the various parts thereof in a tube machine as hereinafter more
fully set forth and finally embodied in the claim.
Referring to the accompanying drawings in which like letters of reference indicate
corresponding parts in each of the several figures;
Fig. 1 is a top plan view of a tube machine embodying my improvement;
Fig. 2 is a longitudinal section through line of Fig. 1, showing the raised triblet
in dotted lines;
Fig. 3 is an enlarged plan view of the draw head showing the springs for holding
the die, and
Fig. 4 is a section through line y of Fig. 3.
Fig. 5 is a plan of the machine with certain of the upper parts removed to more
perfectly disclose other lower parts.
Fig. 6 is a side elevation of the same parts and
Fig. 7 is a section taken on line z.
In said drawings, A represents the frame of the machine with main driving shaft, B,
and driving pulleys, C, arranged on the said main shaft. D, is a shaft carrying gear
wheels, E E', which mesh into gear wheels F, F', and thereby operating a screw
shaft H, to the inner end of which is attached a cross head, m, to which is secured a
jaw n. To said jaw is hinged a movable triblet a, by a pivot b, by means of which
purpose herein-
the same can be raised up, as shown in dotted lines in Fig. 2, for the
At the head of the machine, and directly opposite or in line with the free end of the
triblet is secured by any desired means a plate c having recesses c¹ & c³, and within the
latter is secured or held a die or shaping block e.
after described.
I have shown this die in Fig. 3 as circular, but it can be made square, polygonal or
any form desired, as will be manifest. Arranged in any suitable positions at its sides
and secured to the plate c are springs g. I have shown the springs g, in Figs. 3, & 4,
as flat, but either flat, spiral or any other shape of spring may be used for the same
purpose and with the same effect.
The action of the springs holds the die e in proper position for the action of the
triblet even though the latter should be slightly out of line.
On the driving shaft B is arranged a friction or lock clutches p, as shown in Fig. 6.
for giving a forward and backward movement to the shaft H through its connecting
mechanism, when required, for the adjusting of another tube.
By my improved construction very long tubes can be drawn and, the triblet being
pivoted to the jaw on the cross head of the screw shaft, the ready and quick replace-
ment of another tube to be drawn is effected without the extreme backward action of
the screw shaft carrying the triblet, as in former tube machines, it being only
necessary to move the free end of the triblet backward until it is free and clear from

page_text: the die, when the triblet can be turned up on its pivot and another tube be placed
thereon as will be manifest.
In operation, the triblet is raised on its pivot to the position shewn in dotted lines
in Fig. 2. The tube to be drawn is then placed on the triblet and the latter swung
down into a horizontal position, as shown in Fig. 1. The tube on the triblet is then
forced by the action of the screw shaft against and into the die, which is of a lesser
diameter, and is stretched or extended to the required length.
The screw shaft is then reversed until the free end of the triblet has passed beyond
the face of the die when said triblet is again turned up and another tube placed upon
it and the operation repeated.
By my improved arrangement in having the die movable in the head so to
automatically accommodate itself to the tube and triblet by means of the springs, a
perfect tube is drawn and all danger avoided of cutting or splitting the tube should it
or the triblet be slightly out of line.
The clutch p by means of which the action of the shaft D is reversed and a
backward and forward movement is automatically given to the cross-head m, may be
of any ordinary construction and arrangement but the peculiar combination of parts
shown is preferred, in which t is a longitudinally sliding rod adapted to be operated
by the cross-head the said rod having sleeves or bearings t' which are engaged by an
arm attached to the cross-head and extending to a portion where it will engage
said collars, Fig. 7.
The said rod, t, is connected by a rod, u, with a vertical rod, u¹, having arms, u³,
arranged like those of a bell-crank, and the latter, in turn, is connected by means of a
rod, u², with a lever or crank, u³, on the longitudinal rod, a, by means of which the
said rod u may be turned on its axis. Said rod u is provided with a fork ' which
engages the sliding sleeve p¹ of the clutch p, which sleeve enters into operative
relation to the angle gear-wheels F, F, which when clutched engage the wheel E' and
turn the shaft, D, as before described.
When the head, n, arrives near the end of either of its strokes, the arm, t¹¹, engages
one of the collars or bearings t' and moves the rod, t, longitudinally and the con-
necting rods and levers sufficiently to throw one of the angle gear-wheels, F, from
and the other angle gear-wheel into engagement with the wheel E', whereby the
motion of said wheel E and the parts depending thereon, will be reversed as will be
understood. A reversal of movement may be obtained at any time by bringing
together pedals, K¹, thus actuating the shaft or rod u through the double crank u*.
Having now particularly described and ascertained the nature of my said inven-
tion, and what manner the same is to be performed, I declare that what 1
claim is
1. In a tube machine, a movable triblet adapted to operate as described, for the
purposes set forth.
2. In a tube machine, the combination of a screw or tube shaft, a jaw on the end
of said shaft and a triblet pivoted to said jaw, with means for operating said shaft
and triblet as described.
3. In a tube machine, a die for drawing tubes, movably secured in the head or
end of the frame by springs in the machine as described, and for the purposes set
forth.
4. In a tube machine, a tube stretching mechanism combining therein a plate c,
a die carried by said plate; springs for movably holding said die, and a triblet
connected with the driving mechanism, as described for the purposes set forth.
5. The combination of a die, a movable triblet and means for operating said triblet,
as described and for the purposes set forth.
6. In a pipe or tube-drawing machine, the combination with a frame or bed, A,
cross-head, m, sliding thereon and means for moving the same longitudinally, and
a triblet hinged or pivoted on said head and inovable with the head to and from
a die arranged longitudinally in line with the triblet, substantially as set forth.
7. In a pipe or tube machine, the combination with an automatically adjustable

page_text: or movable die, of a triblet arranged longitudinally in line with said die and movable
to and from the same and also movable in a direction at right angle to its longi-
tudinal movement substantially as and for the purposes set forth.
Dated this 991 1
Ռ T.1 1000
JOHN MATHEW RILEY.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.