New or Improved Machinery or Apparatus for Perfecting, Finishing, Truing Up, or Reamering Tubes, Tubular Unions, Sockets, or the like.
Year: 1896

page_text: Date of Application, 15th Dec., 1896
Complete Specification Left, 3rd June, 1897-Accepted, 14th Aug., 1897
PROVISIONAL SPECIFICATION.
New or Improved Machinery or Apparatus for Perfecting, Finishing,
Truing Up, or Reamering Tubes, Tubular Unions, Sockets, or
the like.
I, RUDOLF CHILLINGWORTH, of Ostbahnhof, Nuremburg, in the Empire of
Germany, Metal Stamper, do hereby declare the nature of this invention to be as
follows:-
This invention refers to new or improved machinery or apparatus for finishing,
perfecting, or truing up tubes, tubular unions, sockets or the like, hereinafter called
calibrating, that is to say, for truing up or perfecting the form of same after
manufacture, the apparatus or machine hereafter described being particularly
applicable to the treatment of such parts when manufactured by the process
described in the specification of British Patent, dated 23rd day of April 1895,
No. 8050.
The machine or apparatus is of considerable importance for calibrating tubular
parts used in the construction of velocipedes, such for example as the tubular
bottom brackets described in the aforesaid specification of Patent, which brackets
are formed with tubular sockets to connect the frame tubes, while the main cylin-
drical part is to carry the crank axle bearings. In these tubular brackets it is
very important that the sockets or unions should be placed accurately relatively to
each other and to the axis of the main tube, and that the main tube should be
truly cylindrical internally. By the apparatus or machinery as hereafter described
this operation of calibrating can be effected in a simple, accurate, and rapid manner
by mechanical means.
According to my invention, and when for example operating upon such a bracket
as before mentioned, the piece of tube with sockets which is to be calibrated, is
inserted whilst in a heated state into a divided hollow case or mould, which is
correctly formed internally and is constructed so that the two or more parts of the
case when placed together, closely encircle or surround the tube and its sockets.
The bringing together of the component parts of the case, causes the contained
bracket to assume a correct and perfect external form and any deviation of the
sockets from their proper position is therefore corrected at once, and it is then
only necessary to make both the tube, and the sockets, exactly cylindrical
internally.
These operations are also effected whilst the tube is situated in the aforesaid
hollow case, by means of apparatus which may be conveniently mounted on a
frame similar to that of a lathe or the like, and comprises a chuck or holder which
is mounted on the front end of the movable centre spindle, and carries in con-
nection with an adjusting screwed spindle a sliding carriage which can be moved
transversely to the axis of the spindle. This carriage is provided with clamps,
that serve to hold the case. The lower one of these clamps is fixed, whilst the
upper clamp is carried by an adjusting spindle, and can be moved up and down

page_text: thereby. The clamps are formed with recesses in which are fitted the conical
ends of the case, and the bringing together of the clamps forces the parts of the
case together.
When the case with its contained bracket tube, is in position, the sliding carriage
is moved by means of the spindle until the socket to be calibrated has assumed a
position coincident with the axis of the spindle. The spindle of the fixed head
stock carries a rimer or boring tool, the diameter of which is equal to the internal
diameter of the socket.
The tube having been clamped in the apparatus in the manner described, the
spindle together with the chuck or holder, is moved by means of a handle or lever
in the direction towards the fixed head stock, whereby the rimer is caused to enter
a socket, and to rimer it out to an exact measurement, and thus finish it internally.
After moving back the spindle, if there are more sockets situated in one and
the same plane to be treated, the carriage is moved to a certain extent so as to
bring the next socket into the central axis of the rimer, whereupon by moving the
spindle the said socket is also trued up in the manner above described. After all
the sockets of the same diameter that are situated in one plane have been trued up
or calibrated, the spindle is screwed upwards, and the case is removed from the
clamping apparatus, and the next piece of tube is placed in it.
Now for the purpose of straightening the tube itself, which usually loses its
exact cylindrical shape in consequence of the drawing process, the case must De
clamped, with its central axis made to coincide with the axis of the spindle. or
this purpose packing pieces are employed which are placed with their conical
rear ends into the clamps and serve by means of their hollow cylindrical surfaces,
to hold firmly and partly enclose the case when the clamp is pressed down.
The calibrating" operation is effected in the same manner as above described
by moving the case in the direction of its longitudinal axis towards the rimer.
Dated this 15th day of December 1896.
New or Improved Machinery or Apparatus for Perfecting, Finishing,
Truing Up, or Reamering Tubes, Tubular Unions, Sockets, or
the like.
I, RUDOLF CHILLINGWORTHI of Ostbahnhof, Nuremburg, in the Empire of
Germany, Metal Stamper, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
This invention refers to new or improved machinery or apparatus for finishing,
perfecting, or truing up tubes, tubular unions, sockets or the like, hereinafter
called calibrating, that is to say, for truing up or perfecting the form of same
after manufacture.
This machinery or apparatus is of considerable importance for calibrating
tubular parts used in the construction of velocipedes, such for example, as the
tubular bottom brackets, which brackets are formed with projecting tubular
sockets to connect the frame tubes, while the main cylindrical part is to carry
the crank axle bearings. In these tubular brackets it is very important that the
said sockets or unions should be placed accurately as required, relatively to each
.other and to the axis of the main tube, and that the main tube should be truly

page_text: cylindrical internally. By the apparatus cr machinery as hereafter described
this operation of "calibrating" can be effected in a simple, accurate and rapid
manner by mechanical means.
Fig. 1 is a perspective view shewing a tubular bracket with sockets, being an
example of one of many constructions suitable for being operated upon according
to this invention, Fig. 2 is a horizontal section of such a bracket in a case or
mould, hereafter described, and Fig. 3 is a sectional elevation shewing the case
or mould, and closing and holding means for same. Fig. 4 is a side elevation of
so much of "calibrating" machinery or apparatus aforesaid as will be necessary
for the purpose of this specification. Fig. 5 is a plan view shewing a lever
mechanism for operating a part of the machine shewn at Fig. 4. Fig. 6 is a
sectional side elevation drawn to a larger scale than the previous figures, shewing
the mechanism for holding and adjusting the parts to be operated upon. Fig. 7
is a sectional end view shewing further gripping or holding mechanism, and
Fig. 8 is a plan view of the parts shewn at Fig. 6.
According to this invention, and when for example operating upon such a
bracket as before mentioned, say such as shewn at Fig. 1, the piece of tube A
having sockets A¹ is heated to a sufficient degree, and is then enclosed within a
divided case or mould. This case or mould is divided in such a manner as to enable
it to be placed together and to enclose the tubular bracket A, and its sockets A¹,
thus when the sockets are situated as at Fig. 1 the case may be divided as shewn
at Fig. 2 into two parts as B B', or it may be divided into three or more parts all
according to the relative positions, forms or numbers of the sockets, apertures
being formed to permit access to the interior of the hollow article. The interior
form of the case B B is exactly that which the exterior surfaces of brackets and
sockets should assume or possess when finished. Exteriorally the case B3 B¹ Fig. 3
is generally cylindrical or may be that of a right polygonal prism the ends being
tapered in a proper degree so that it may be inserted (when the bracket A has
been enclosed) between two clamping heads h and g parts of which are shewn in
section at Fig. 3, and these heads are then brought together so that the parts of
the case B are closed, and the contained heated bracket and sockets are caused
to assume a correct and perfect external form; any deviation of the sockets A¹ from
their proper position is therefore corrected at once, and it is then only necessary
to make both the tube, and the sockets, exactly cylindrical internally.
These operations are effected whilst the tube is situated in the aforesaid hollow
case, by means of apparatus shewn at Figs. 4 to 8. This apparatus may be con-
veniently mounted on a frame similar to that of a lathe or the like and comprises
a chuck or holder C which is fixed on the front end of a longitudinal movable
shaft . The chuck or holder C carries in connection with an adjusting screwed
spindle Ca sliding carriage C³ which can be moved transversely to the axis of
the shaft C. The carriage is provided at each end with a bearing collar D D¹
best seen at Fig. 6, from which are carried the clamps and h that serve to hold
the case B. The lower one g of these clamps is fixed to its collar or carrying
arm D whilst the upper clamp his carried by an adjustable spindle E, screw
threaded into and through the collar D', and the clamp h can therefore be moved
up and down by means of said spindle which is for this purpose provided with
Fay a square upper end onto which may be fitted a lever handle; thus the bracket
having been inserted within the parts of the case B, the latter is then placed
between the clamps 9 and h, and the latter are closed together by operating the
screw E, and the bracket and its sockets thereby brought to perfect external form,
while the case remains held firmly between the clamps 7 and h.
When the case with its contained bracket tube is thus in position, the sliding
carriage is moved by means of the spindle Cuntil the socket such as A¹ to be
calibrated has assumed a position coincident with the axis of the shaft C¹. F is u
fixed head stock carrying in bearings a driven shaft G, which carries a rimer or
boring tool H, the diameter of which is equal to the internal diameter of the
socket which is required to be trued.

page_text: The tube having been thus clamped and set in position in the apparatus in the
manner described, the shaft C together with the chuck or holder C, is moved by
means of a handle J Fig. 5 in the direction towards the fixed head stock F', whereby
the rimer H is caused to enter a socket such as A Fig. 6 to rimer it out to au
exact measurement, and thus finish it truly internally.
After moving back the shaft C', (if there are more sockets A' situated in one and
the same vertical plane, to be treated), the carriage C is moved to a certain extent
so as to bring the next socket into the central axis of the rímer, whereupon by
moving the shaft C' the said socket is also trued up in the manner above described.
After all the sockets of the same diameter that are situated in one plane have been
trued up or calibrated, the screwed spindle E is screwed upwards, and the case is
removed from the clamping apparatus, and the next piece of tube is placed in it.
Now for the purpose of straightening the tube A itself, which tube usually
loses its exact cylindrical shape in consequence of the drawing process, the case B
must be clamped in the manner shewn in Fig. 7 that is to say, its central axis
must be made to coincide with the axis of the shaft C. For this purpose packing
pieces L and M are employed which are placed with their conical ends into the
clamps and serve by means of their hollow cylindrical surfaces L' M³, to hold firmly
and partly enclose, the case B when the clamp h is pressed down.
The "calibrating" operation is effected in the same manner as above described
for the sockets, by moving the case in the direction of its longitudinal axis towards
the rimer.
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:-
1. In finishing, perfecting, or truing up tubes, tubular unions, sockets and the
like, a case adapted to receive the article to be treated in a heated state, such
case being composed of divided parts having when brought together, an internal
space to correspond with the external configuration the article should assume,
clamps adapted to be brought towards each other to close together the parts of
the case and thereby force the article into true external form, a sliding shaft to
carry the clamping device and case, means for adjusting the latter relatively to
the axes of the rotating rimer, and means for sliding the shaft and causing the
rimer to enter apertures in the case and true up the interior of the tubular article,
substantially as set forth.
2. The new or improved machine or apparatus for perfecting, truing up, or
finishing, tubes, tubular unions or tube sockets, characterised by a rotating rimer
or the like, in combination with a clamping device arranged opposite said rimer,
and serving to clamp the tubes or tubular parts which are situated in a hollow
case, said case being adapted to be moved by means of a sliding carriage C³ per-
pendicular to the axis of the shaft G, carrying the tool or rimer, and also to be
moved in the direction of the said axis towards the rimer, in such a manner that
the said rimer is caused to enter the tubular socket situated in front of it, all
arranged and acting substantially as and for the purposes herein before described.
3. The general arrangement and combination of parts composing the machine
or apparatus for truing up, finishing, or perfecting tubes, tubular unions, or the
like, all constructed and acting, substantially as and for the purposes described
and illustrated with reference to the accompanying drawings.
LOOT aime TO
DIG STRAT
Witness:
E. G. BREWER,
33, Chancery Lane, London.
RUDOLF CHILLINGWORTH.