Improved Process and Device for Clamping Hollow Bodies of Glass or Ceramic Products and the like to be Treated in Grinding and other Machinery.
Year: 1898

page_text: Date of Application, 17th Nov., 1898-Accepted, 17th Dec., 1898
COMPLETE SPECIFICATION.
Improved Process and Device for Clamping Hollow Bodies of Glass
or Ceramic Products and the like to be Treated in Grinding
and other Machinery.
I, JOSEF FLIEGEL, & subject of the Emperor of Germany and resident of
No. 8, Sprottauer Chaussée, Mallmitz (Silesia), in the Empire of Germany,
Manufacturer, do hereby declare the nature of my said invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
This invention relates to a process and a corresponding device for clamping hollow
bodies of glass, porcelain, ceramic products or other materials in machinery for
treating these bodies, as for instance, grinding machinery, with which the absolutely
secure holding of these bodies in the adjusted position is of moment. The position
is also maintained during the rotation of the bodies necessary for their treatment,
since a secure holding of the same at the rear and front end is effected.
In the drawing, the invention is shown for example as a clamping device for
bottles or hollow vessels of glass, porcelain or other ceramic products for the
treatment of the same in grinding machinery, in order to grind even or perfectly
plain surfaces, which enable a tight fit of the stopper on to the hollow bodies to be
closed without interposed packing being employed.
Fig. 1 is a vertical longitudinal section through a clamping device for bottles
having a conical ring acting against the bottom of the bottle and at same time
ensuring the centering and a front ring with conical clamping clutches or claws..
Fig. 2 is a vertical longitudinal section through a modification of the clamping
dovice in which the clamping of the hollow body at the rear end is effected by
spring arms and at the front end by adjustable conical clamping jaws.
Fig. 8 is a vertical section through a clamping device with fixed conical clamping
jaw for the rear end and pivoted clutch levers operated by a conical ring for the
front end of the hollow body to be clamped.
B
The hollow body a is, according to the clamping device of Fig. 1, surrounded by
a sleeve or holder b, on which a ring c is screwed behind, in whose covering plate d
is guided a screw spindle s provided with a head or handle e¹. Through the screw
spindle, a conical ring f, which is guided in the ring c may be moved to and fro or
reciprocated against the hollow body a to be clamped in order to centre same in
the sleeve b and to securely hold same at the bottom.
On the front end, of the sleeve 6 an annular cap g may be screwed whose inner
projecting rim or edge gl has a conical surface, abutting against the wedge shaped
and spring clamping jaws h¹ of a ring secured in the sleove b and causes
or effects a compression or staying of the jaws h¹ according to the tightening or
releasing of the cap g, the packing picces of the jaws lying against the head or
the front end of the hollow body to be clamped. In this manner, the hollow body
is clamped at the rear and front end by the conical ring f, the cap g and preferably
by the aid of the jaws h¹.
According to the clamping device as shown in Fig. 2, the rear clamping ring is
substituted by spring fingers or arms k, which are secured by screw pins & or the
เ

page_text: pass.
like to the sleeve or holder b¹ and act with their preferably conically shaped heads k¹
against the bottom of the hollow body and thus effect its centering in the sleeve b¹.
The spring conical jaws m form the front end of a sleeve n slidable within the
sleeve or holder 61, such sleeve n extending to the rear end of the sleeve b¹ and
being provided with slots or openings through which the
arms k
The
sleeves mi abut with their conical outer surfaces against the correspondingly
inclined rim 6* of the sleeve or holder 6', so that through the longitudinal movement
of the sleeven they may be pressed against the head of the body to be clamped or
be removed therefrom. This longitudinal movement of the sleeve n with the
jaws m in the one or other direction is effected by a threaded ring o which may be
screwed on a threaded part of the sleeve b¹, the edges of such ring o acting against
levers p which are pivotally mounted on pins in slots of the sleeve b¹ and engage
with their projections or lugs p' in holes or slots.of the sleave n.
.
By operating the ring o in the one or other direction, the projections p¹ of the
lovers p and thereby the sleeve n are moved in a corresponding direction so that
the front end of the hollow body a may also be clamped from the rear end.
According to the device of Fig. 3, the clamping of the hollow body is effected by
à sleeve like or clamping body 63, whose fixed inner conical surface q effects the
centering and securing of the body a at the rear end, whilst the front end is hold by
clutch lovers moving on pivots s in slots of the body 63. On a threaded part of b
aring can be screwed, which with its preferably inclined inner rim acts against
the clutch levers r, which are thereby pressed against the front part of the body
to be clamped.
.I.
a
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
olaim is:
1/. Improved process of clamping hollow bodies of glass, ceramic products or
the like to be treated in grinding machinery or the like characterized by clamping
these hollow bodies.al at the rear and front end with adjustable pressure by the
action of conical surfaces in anoh a manner that after the adjustment, a change in
the position cannot take place substantially as described and shown in the
drawing.
:
1
'
...2%. A process for clamping and centering a hollow body at the rear end carried
out by means of a ring with conical surface and a cap g g¹ acting against wedge
shaped clutches h¹ of a ring 6 substantially as described and shown in the
drawing.
=
8/..A..process for centering and clamping the hollow body carried out by means
of spring arms and a sleeve R operated by the screw threaded ring o'and the
levers ppl, the spring wedged-shaped jaws m of the sleeve n opening and closing
in the longitudinal movement of the latter by their bearing against the rim 6² of
the outer sleeve substantially as described and shown in the drawing.
4/.. A procoss for centering and clamping a hollow body carried out by means of
a clamping body 63 with fixed conical surface 9 and clutch levers + moveably
pivotted on pins and operated by a ring v substantially as described and shown in
the drawing.
'
"1
Dated 'thi with of N
1000