Improvements in Draw-benches.
Year: 1899

page_text: Date of Application, 27th July, 1899
Improvements in Draw-benches.
We, GERARD ALBERT MUNTZ, of " Summerfield," Sutton Coldfield, in the
County of Warwick, Manufacturer, and ALBERT JAMES ASTBURY, of Smethwick
Foundry, Smethwick, in the County of Stafford, Engineer, do hereby declare the
nature of this invention to be as follows:-
Our invention consists of the improvements hereinafter described in draw
benches. The draw-bench dog-wagon or carriage, to which the tube or article
is temporarily affixed and to which the drawing power is applied, is ordinarily
returned, after the drawing operation, by an attendant to its back position at the
rear of the draw-bench.
The object of our improvements is to automatically effect the return motion or
traverse of the drawbench dog-wagon or carriage after it has made its advance
motion or traverse and after the tube or article has been released from the die
and the wagon from the drawing power. This object we effect by the construc
tion and combination of parts hereinafter described.
At the rear and below the level of the bed of the drawbench we arrange a
cross shaft carrying a pulley and working freely in its bearings. To the rear end
of the dog-wagon or carriage, one end of a rope or chain is attached, the other
end of the said rope or chain being attached to the pulley described on the cross
shaft, a guide pulley guiding the said rope or chain to and from the said pulley.
As the dog-wagon or carriage makes its forward traversing motion on the bed of
the drawbench the rope or chain described is unwound from the pulley. As the
dog-wagon or carriage makes its back or return motion the rope or chain is
automatically wound upon the pulley in the following manner. On one end of
the cross shaft carrying the pulley a small drum is affixed on which a weighted
cord or chain is coiled and uncoiled. As the dog-wagon or carriage makes its
forward traverse the said weighted rope or chain is coiled upon the drum and
the weight is raised, the dog-wagon rope or chain being at the same time
unwound from its pulley. On the release of the dog-wagon from the drawing
power the weight descends and the weighted rope or chain is unwound from its
drum, giving rotation to its shaft and to the pulley upon it and effecting the
winding of the dog-wagon rope or chain upon the said pulley, and thus auto-
matically giving the return or back traverse to the dog-wagon or carriage.
Our improvements are specially applicable to draw-benches for drawing tubes
but may also be applied to draw-benches for drawing rods, wire and strips of
metal and metallic alloys.
Datal this Twonky-sovanth duo of Tuly 1900
W. T. WHITEMAN,
Agent for the Aplicants.

page_text: Даргомещению
We, GERARD ALBERT MUNTZ, of Summerfield," Sutton Coldfield, in the
County of Warwick, Manufacturer, and ALBERT JAMES ASTBURY, of Smethwick
- Foundry, Smethwick, in the County of Stafford, Engineer, do hereby declare the
nature of our invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:-
Our invention consists of the improvements hereinafter described in draw
benches. The draw-bench dog-wagon or carriage, to which the tube or article
is temporarily affixed and to which the drawing power is applied, is ordinarily
returned, after the drawing operation, by an attendant to its back position at the
rear of the draw-bench.
The object of our improvements is to automatically effect the return motion or
traverse of the draw-bench dog-wagon or carriage after it has made its advance
motion or traverse and after the tube or article has been released from the die
and the wagon from the drawing power. This object we effect by the construc-
tion and combination of parts hereinafter described.
a
At the rear and below the level of the bed of the draw-bench we arrange
cross shaft carrying a pulley and working freely in its bearings. To the rear end
of the dog-wagon or carriage one end of a rope or chain is attached, the other
end of the said rope or chain being attached to the pulley described on the cross
shaft, a guide pulley guiding the said rope or chain to and from the said pulley.
As the dog-wagon or carriage makes its forward traversing motion on the bed of
the draw-bench the rope or chain described is unwound from the pulley. As the
dog-wagon or carriage makes its back or return motion the rope or chain is
automatically wound upon the pulley in the following manner. On one end of
the cross shaft carrying the pulley a small drum is affixed on which a weighted
cord or chain is coiled and uncoiled. As the dog-wagon or carriage makes its
forward traverse the said weighted rope or chain is coiled upon the drum and
the weight is raised, the dog-wagon rope or chain being at the same time
unwound from its pulley. On the release of the dog-wagon from the drawing
power the weight descends and the weighted rope or chain is unwound from its
drum, giving rotation to its shaft and to the pulley upon it and effecting the
winding of the dog-wagon rope or chain upon the said pulley and thus auto-
matically giving the return or back traverse to the dog-wagon or carriage.
Figure 1 of the accompanying drawings represents in side elevation and
Figure 2 in plan, a draw bench containing the arrangement or combination of
parts constituting our invention for automatically returning the dog-wagon or
carriage of the draw-bench to its back position after the tube or article has been
released from the die and the dog-wagon from the drawing power.
The same letters of reference indicate the same parts in both figures.
is the bed of the draw-bench on which the dog-wagon b traverses for effect-
ing the drawing operation, the tube to be drawn being affixed to the said wagon
in the usual way; c is the draw plate against which the usual drawing die abuts.
The dog-wagon is connected with and released from the endless drawing chain d
by the hooked and weighted dog or lever e, e² the releasing of the said dog-wagon
from the said drawing chain being automatically effected in the manner here-
inafter described. In Figure 1 the dog or lever e, e² is represented disengaged
from the drawing chain and the dog-wagon uncoupled from the drawing power.
The endless drawing chain d works over two drums the one at the driving end

page_text: of the bench being provided with teeth to engage with the said chain, and being
driven by suitable gearing in the usual manner. To the rear end of the dog-
wagon one end of the rope or chain f is attached at f2. The said rope .or
chain passes over the guide pulley and its end is attached to the large pulley /
on the cross shaft i turning freely in the bearings k, kat the rear and below the
level of the bed a of the draw-bench (see Figure 1). As the dog-wagon b makes
its forward traversing motion on the bed a of the draw bench, in the direction
of the arrow Figure 1, the rope or chain ƒ is unwound from the pulley / the said
pulley thereby giving rotation to the cross shaft on which it is fixed. After
the tube has been drawn and released from the die in the draw plate e and the
dog-wagon disengaged from the drawing chain d in the manner hereinafter
described, the pulley is rotated in the opposite direction to that last described
and the rope or chain f is automatically wound upon the said pulley A for giving
the return or back traverse to the dog-wagon b. The motion of the pulley in
the direction proper for winding the rope or chain f upon it is effected by the
descent of the weighted cord or chain which is uncoiled from the drum m on the
cross shaft i carrying the pulley h. As the dog-wagon makes its forward
traverse in the direction of the arrow Figure 1, the weighted rope or chain /
is coiled upon the drum m and the weight on the end of the said cord is raised,
the dog-wagon rope or chain f being at the same time unwound from its pulley.
Although we prefer to connect the cord or chain by which the automatic back
traverse is given to the dog-wagon to the pulley on the cross shaft i and use
therewith a weighted cord or chain on the drum m on the said cross shaft i, the
said pulley, drum and shaft and secondary rope or cord may be dispensed with
and the weight be connected directly with the end of the rope or chain f after it
passes over the guide pulley g, but as the modified arrangement described entails
à longer drop or descent of the weight than is afforded by the arrangement of
parts shown in the drawing we prefer to use that arrangement as before stated.
The action of the combined mechanism represented in the drawings is as
follows: The endless drawing chain d being set to work so that its upper layer
has motion in the direction of the arrow, Figure 1, and the dog-wagon being
in its back position near the draw-plate and with the tube secured to it, the
said wagon is coupled with the links of the drawing chain by lifting the
weighted arm of the dog or lever ce, c², thereby depressing the hooked arm and
engaging it with the said drawing chain and the dog-wagon makes its forward
traversing motion in the direction of the arrow Figure 1 and draws the tube
through the die at the draw plate e as is well understood; the dog-wagon cord
or chain f being thereby uncoiled from the pulley and the drum cord or
chain being wound upon its drum m and the weight raised. As soon as the
rear end of the drawn tube escapes from the die the momentum of the dog-
wagon b, in consequence of the reduced resistance offered to its motion, causes
it suddenly to shoot forward slightly in advance of the motion of the drawing
chain. The dog e, is thereby disengaged from the links of the drawing, chain
with which it was engaged and lifted into the position represented in Figure 1
by the weight e² on the upper arm of the said dog. The dog wagon being thus
automatically uncoupled from the endless drawing chain d the said wagon
makes its back or return traverse on the bed a by the descent of the weighted
cord or chain, the latter being unwound from its drum and thereby giving
rotation to its shaft i and to the pulley on the said shaft and effecting the
winding of the wagon rope or chain f upon the said pulley has hereinbefore
described.
By the use of our invention the employment of an attendant for releasing the
dog wagon from the drawing power after the drawing operation and for returning
the released dog-wagon to its back position for another drawing operation is dis-
pensed with as well as the time and labour saved, necessary in working the
ordinary draw-bench.
Our improvements are specially applicable to draw-benches for drawing tubes

page_text: but may also be applied to draw benches for drawing rods, wire and strips of
metal and metallic alloys.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that we claim
as our invention of "Improvements in draw-benches" :-
The combination in a drawbench provided with an endless drawing chain of a
dog-wagon, which automatically releases itself from the said endless chain, as
herein before described, and a weighted cord or chain, which automatically effects
the return or back traverse of the said dog-wagon to its back position on the
draw bench bed, near the draw-plate, after the tube or article has been drawn
through and released from the die substantially as described and illustrated in the
accompanying drawings.
Dated the Eighth day of March 1900
GERARD ALBERT MUNTZ.
ALBERT JAMES ASTBURY.