Improvements in Machines for Carding or Picking Ropes and other Fibrous Materials.
Year: 1891

page_text: Date of Application, 25th Apr., 1891
Complete Specification Left, 26th May, 1891-Accepted, 4th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Machines for Carding or Picking Ropes and other
Fibrous Materials.
I ARNOLD ANDREAS DOLDER of Bremen in the German Empire Manu-
facturer do hereby declare the nature of this invention to be as follows:-
In the picking machines now in use the rope cord or other materials to be picked
is brought into contact with the teeth or points, fixed outside a quickly revolving
drum, and my invention relates particularly to the manner of feeding the material
to be picked to the said drum. By the at present used machine the material is fed
by means of a pair of rollers mounted in springs, such rollers holding the material
firmly and close against the picking teeth paying out the material gradually as it is
picked. This arrangement causes the fibre of the material to be torn asunder much
more than is desirable producing short fibred pickings which are considered much
less valuable than the longer fibred, such as are produced by hand or by means of
a machine made according to my invention as hereinafter explained.
In the drawing herewith e represents the picking drum with picking teeth f,
while a b c d are the peculiarly arranged feeding rollers according to my invention.
Rollers a and b are mounted in powerful springs so that they are capable of firmly
clutching the material. While rollers c and d press less firmly against each other
so that any fibre caught by the teeth may be pulled out yet firmly enough to bring
on the material.
Rollers a b by themselves practically constitute the feed arrangement at present
in use but it is obvious that if placed as they now generally are quite close to the
teeth that then the fibre becomes very short as already above explained and that if,
on the other hand removed further away, the pickings would be lumpy and irregular.
which while
It is for that reason that I provide the second pair of rollers c
guiding the material to within the proper distance of the teeth yet doesnt prevent
fibre to be pulled out unbroken.
The roller pairs a c & b d are connected with chains and move of course in
opposite directions, and their surfaces may be smooth or irregular.
C
By preference I place the feed rollers in the position relatively to each other
and to the picking drum as shewn in the drawing, that is to say, above the level of
the centre of the drum, and the top roller c in closer proximity to the teeth than
the lower roller d, for it is obvious that by this arrangement longer fibres are
obtained than if the two rollers were in a vertical line relatively to each other and
especially so if the two rollers c and d should accidently or designedly be pressed
against each other with sufficient force to tear the fibre.
In this position roller c also guides the material well while it is being actually
picked.
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page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Carding or Picking Ropes and other
Fibrous Materials.
I, ARNOLD ANDREAS DOLDER of Bremen in the German Empire Manu-
facturer do hereby declare the nature this invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement:-
In the carding machines at present in use the material to be picked is fed to the
teeth of carding drum by means of two rollers running in close proximity. By
means of powerful springs or weights the said feed rollers are pressed together in
order to hold tightly the material to be picked which is often uneven in thickness
and also to prevent unpicked material being torn away.
To this there is the objection that the material thus held is mostly torn and is
much decreased in value. This objection is raised by experts to all carding
machines hitherto constructed.
In order to remove this difficulty it is necessary to increase the distance between
carding drum and feed rollers. When however the latter are placed at a greater
distance, then the teeth of the carding drum cannot catch the material at all or but
partly, so that it leaves the machine in lumps and is unsuited for use.
In order to prevent this and the tearing and damaging of valuable upholsterers
material and such like, I lower the drum axle and employ guide rollers peculiarly
placed relatively to the carding drum and to the feed rollers. The guide rollers e d
are placed under weak pressure, in order to permit the individual hairs or fibres
caught by the picks of the quickly rotating drum to glide through. The feed
rollers a. however are placed under as powerful a pressure as may be necessary
for the careful picking of the fibrous cord or material.
Roller pairs ac as well as --d are each connected by means of a driving chain
so that the rollers a- revolve the same way and rollers -d together in the opposite
direction.
The rollers may be either smooth or corrugated, and more than two pairs of such
rollers may be employed if required.
Rollers a. b. c. d. are placed at such angles to each other as to feed the material to
the carding drum in the proper manner. The drawings herein referred to were
filed with the Provisional Application.
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:
In upholsterers carding machines the arrangement of several roller pairs con-
nected with driving chains placed at an acute angle relatively to each other and
above the level of the carding drum axle for the purpose of operating on rope or
fibrous material for upholsterers stuffing and such like without damaging it,
substantially as described.
Dated this 26th day of May 1891
ARNOLD ANDREAS DOLDER.
Per Bonne & Co.,
57 & 58, Chancery Lane, London, Registered Patent Agents.