Improvements in Apparatus for Making and Trueing Balls.
Year: 1897

page_text: Improvements in Apparatus for Making and Trueing Balls.
I, JOHANN ANDREAS OCHS, of 29, Stift Strasse, Frankfort am Main, Germany,
Mechanician, do hereby declare the nature of this invention to be as follows:-
This invention relates to filing and grinding apparatus having for object to pro-
duce uniform and accurately round balls from wire-ends that have been irregularly
cut off from round steel.,
According thereto such an apparatus comprises two, preferably horizontal,
carrying discs which rotate in opposite directions. In the inner face of each of
these carrying discs, there is inserted, eccentrically to the axis of rotation, a
hardened steel disc which is either cut with file-like teeth or provided with grind-
ing material. The carrying discs themselves may be fixed on their axles either
both concentrically or both eccentrically; or one disc may be eccentrically fixed,
and the other disc fixed concentrically. Moreover, one milling or grinding disc
may be inserted concentrically, and only the other milling or grinding disc eccen-
trically.
Between these two milling or grinding discs, the irregularly cut-off steel pieces
are brought and treated, being solely by the motion or rotation of the discs, con-
tinually rotated about their respective centres and rolled to and fro over the grinding
surfaces, so that mathematically exact balls are produced. One milling or
grinding disc may be inserted in its carrying disc so as to leave a recess therein
in order that the rim of the latter may prevent the balls from being thrown out
during treatment; but this border is not necessary, and may he dispensed with
in some cases.
The axle of one of the carrying discs preferably runs, co-axially within the axle
of the other carrying disc, and the two discs are driven in any suitable manner,
as by means of toothed wheels.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.

page_text: the same is to be performed to be particularly described and ascertained in and
by the following statement:-
-
This invention relates to filing and grinding apparatus having for object to pro-
duce uniform and accurately round balls from wire-ends that have been irregularly
cut off from round steel.
According thereto such an apparatus comprises _two, preferably horizontal,
carrying discs which rotate in opposite directions. In the inner face of each of
these carrying dises there is inserted, eccentrically to the axis of rotation, a
hardened steel disc, which is either cut with file-like teeth or provided with grind-
ing material. The carrying discs themselves may be fixed on their axles either
both concentrically or both eccentrically; or one disc may be eccentrically fixed,
and the other disc 'fixed concentrically. Moreover, one milling or grinding disc
may be inserted concentrically, and only the other milling or grinding disc eccen-
trically. In some cases one or each of the carrying discs may be made in one
piece with its corresponding milling and grinding disc. In this case one at least
of the discs must be eccentric to the axis of rotation.
Between these two milling or grinding discs, the irregularly cut-off steel pieces
are placed and treated, being, solely by the motion or rotation of the discs, con-
tinually rotated about their respective centres and rolled to and fro over the
grinding surfaces, so that mathematically exact balls are produced.
One milling or grinding disc may be inserted in its carrying disc so as to leave
a recess therein in order that the rim of the latter may prevent the balls from being
thrown out during treatment; but this border is not necessary, and may be dis-
pensed with in some cases.
The axle of one of the carrying discs preferably runs co-axially within the axle
of the other carrying disc, and the two discs are driven in any suitable manner,
as by means of toothed wheels.
The accompanying drawings illustrate by way of example one arrangement of.
,'apparatus constructed according to this invention.
Fig. 1 shows the apparatus partly in side elevation, and partly in vertical
-section.
Fig. 2 is an underside view, showing the upper carrying disc, and Fig. 3 a plan
showing the lower carrying disc, each with the milling or grinding disc placed
therein.
...The apparatus shown comprises a base plate a having two frames or standards b
provided with bearings in which runs a shaft c that is driven in any suitable
imanner as for example by a belt and one of a pair of fast and loose pulleys. e is
an arm extending from the base plate a and f is another arm extending from one
of the standards b. The arm e is provided with a footstep bearing in which the
lower end of a vertical shaft g is mounted to rotate.
2
This shaft g passes at its upper part through the centre of a toothed wheel h
and of an extension h' thereof. This extension rotates in a bearing in the arm f,
and forms a bearing for the shaft g about which the said extension and the toothed
wheel rotate. Upon the shaft 9 is keyed a toothed wheel and both the
toothed wheels h and i engage with a common toothed wheel & fixed on the driving
shaft c.
To the extension of the toothed wheel his fixed in any suitable manner the
carrying diso k and to the upper end of the shaft g a carrying disc / is connected
by means of a key g¹ in such a manner that when shaft g is rotated the disc / will
also rotate with it, but the latter will be capable of moving towards or away from
the carrying disc k during rotation.
The two carrying discs and are both mounted eccentrically on their respective
axles and are recessed on their inner or opposing faces and fitted respectively with
milling or grinding discs m and n which are also mounted, in the example shown,
eccentrically to the common axis of rotation.
For the purpose of making and trueing balls according to this invention, the

page_text: wire ends to be treated are placed on the milling or grinding disc m, and the
carrying disc with the milling or grinding disc n replaced on to the shaft 9. The
carrying discs k and are then rotated in opposite directions by means of the
toothed wheels, d, h, and i whereby the wire-ends situated between the milling
or grinding discs m and are filed or polislied until uniform and accurately round
balls are produced therefrom. The top of the milling or grinding disc mis
arranged slightly below the rim of its carrying disc k so as to leave a recess therein
in order that the rim of the latter may prevent the balls from being thrown out
during treatment.
The driving of the discs k, m and 1, n, in opposite directions, may also be effected
in any other suitable manner.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is:-
:-
1. Apparatus for making and trueing balls, in which two grinding or milling
discs mounted to rotate in opposite directions, are arranged, either both eccen-
trically, or one concentrically and the other eccentrically with relation to their
common axis of rotation, substantially as described.
2. Apparatus for making and trueing balls, comprising two carrying discs & and
mounted to rotate in opposite directions, and respectively fitted with grinding or
milling discs m and n arranged eccentrically to their common axis of rotation,
substantially as described and shewn.
3. The improved apparatus for making and trueing balls constructed, arranged
and operating as hereinbefore described with reference to and shown in the draw-
ings annexed:
Dated this 22nd day of Mar 1000
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.