Improvements in Apparatus for Forming Chain-links, Rings, and the like.
Year: 1897

page_text: Date of Application, 19th Aug., 1307-Accepted, 13th Nov., 1897
COMPLETE SPECIFICATION.
Improvements in Apparatus for Forming Chain-links, Rings, and the
like.
I, FRITZ THEILE, Schwerte, in the Province of Westfalia, German Empire,
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:--
By means of the apparatus forming the subject of the present application, chain-
links and rings may be bent and formed from a straight wire or round bar iron in
such a way that they may receive only one and the same heating throughout and
may be welded without any finishing by hand being necessary.
The invention is illustrated in the annexed drawing in which :-
Figure 1 shows a front elevation of the roller apparatus when at rest.
Figure 2 shows a front view of the same when in working position with the
chain iron i inserted therein.
Figure 3 illustrates a sectional end elevation taken on the line 3-3 of Figure 2.
Figure 4 illustrates a front elevation of the bending disc and gripping device.
Figure 5 is a side elevation of the roller m.
Figure 6 illustrates the chain iron before treatment.
Figure 7 shows two views of the chain iron after treatment.
The machine parts are mounted upon supports e, c, c² upon a common ground
plate; they consist of the shaft a, rotated by pulleys s, a spring u around the shaft,
the adjusting ring and the roller disc e with the thumb, k (Figure 3) for regu-
lating the distance between the stud or core d and the part & for different thicknesses
of wire to be bent. The thumb piece being clamped in its respective position
by any suitable device.
The working side of the roller disc is provided with a screw-like elevated plane -
(Figures 3 and 4) the inner periphery of which is eccentric to that of the outer.
The guide frame o, 7, 9 with the spring n situated beneath it and the roller m,
convex in front and grooved on its rotating surface, which is fastened to the lever
arm by means of screw bolts r are mounted upon the support &².
The manner of operation is as follows:-A chain or ring iron i previously cut
to the required length and bevelled at its extremities is pushed with one end
between the stud or core d, cast on the disc e and provided on its upper edge with
furrows or grooves for gripping the lengths of wire to he bent and the part k of
the thumb h, k which is also provided with furrows or grooves to serve the same
purpose as those on the stud or core d: the belt is then changed from the loose
pulley to the fast one. The screw-thread-like elevated eccentric plane on the
nner surface of the roller disc c presses the chain iron, which is coiling around
the stud or core by reason of the support given to the chain iron i by the roller m
by means of the guide frame o, 1, 9 in such a manner that a closed link will not
be formed but that the two ends of the iron keen wide apart so that before the
velding of the link a closed ring or a chain link may be easily put in. The par-
icular arrangement of the screw-thread-like roller disc e effects a lateral moving
the shaft a during this action, but as soon as the greatest eccentricity of the

page_text: roller disc has caused the guide arm o to reach its lowest position the spring u
presses the shaft a into its original position, and the spring n lifts again the guide
frame o, p, so that the roller m will be brought back into the original position.
By means of the above described particular combination the production of rings
or chain links ready for welding of any desired size, of straight bars is enabled 5
by simply changing the roller disc and roller according to the requirements.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
The improved roller apparatus for the manufacture of chain links and rings 1
consisting in a rotatable stud or core with a thumb piece mounted eccentrically
thereupon, which supports and grips the material, the guide roller for bending
the iron, an eccentric presser disc fastened upon a stud or core all constructed
combined and operating substantially as and for the purposes herein described
and set forth.
Datad this 10th day of trust 1807
1
PHILLIPS & LEIGH,
No. 22 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.