A New or Improved Apparatus for use in Holding and Centering Cycle and other Fittings while being Bored.
Year: 1897

page_text: Date of Application, 20th Dec., 1897-Accepted, 29th Jan., 1898
DE MULTICATION.
A New or Improved Apparatus for use in Holding and Centering
Cycle and other Fittings while being Bored.
I, THOMAS GROVES, of the Ormonde Cycle Co., Limited, Romford, Essex, Works
Manager, 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:
This invention relates to an apparatus to be employed especially in connection
with the bracket bearing of cycles, but it is also applicable to other fittings and
provides a means by which such fittings can be securely held and adjusted with
great accuracy.
In carrying out my invention a carriage is employed to which the fitting is
secured, this carriage sliding upon guides. The frame of the apparatus carries an
adjustable tube which can be secured firmly in place after it has been adjusted.
Through this tube the boring tool is passed, and the tube also serves to hold the
part of the article which is being drilled.
In order that the invention may be more clearly understood, reference is had to
the accompanying sheet of drawings, in which Fig. 1, is an elevation partly in
section of my improved device Fig. 2 is a view at right angles to Fig. 1, and
Fig. 3 a detail view.
A is the frame of the apparatus provided with the base a, the whole being
formed from a casting. As shown the frame is of arched shape in side elevation
and at the top is provided with the boss or enlargement a¹. This boss is formed
with a central hole screw threaded internally at the top but tapering for the lower
half at 2. Within this tapering part of the hole the loose split collar or sleeve B
is placed, this sleeve also tapering externally but of cylindrical form internally.
This sleeve is split at 6 as shown in the drawing but may be cut in any other
effective manner and is also provided with the deep notches 6', two of these being
shown, the notches and the division being at equal distances apart. This arrange-
ment allows the sleeve to be slightly opened and also to be compressed, so as to
grip the tube C which is passed through. To secure this tube firmly in position
after it has been adjusted, the ring D is employed screwing into the upper end of
the boss and pressing upon the upper edge of the tapering sleeve. When this
ring is screwed down tightly the sleeve will be caused to bite firmly against the
sides of the tube C so that the latter cannot be shifted. This centering tube C
serves to receive the part of the fitting E which is to be bored. This fitting is
secured to the carriage F which is formed with grooves or channels G sliding
on guides or on runners and the base a The plug H serves to secure the
carriage after the fitting is adjusted to the required angle.
To hold the fitting in the carriage the spindle J is employed passing com-
pletely through the tube of the fitting. This spindle is carried by the vertical
part of the carriage which is bored to receive one end of this spindle. The
spindle is provided with a collar and is secured to the carriage by the nut j.
The carriage F is provided with the disc f' which can turn relatively to the

page_text: main part upon the spindle J, the nut serving to fix this disc as well as the
spindle. A tube may be used instead of the spindle if desired.
The disc f is provided with the extension 2 at one side, this extension being
formed with a hole to receive a plug L. The end of this plug fits into one tube
of the fitting and prevents any danger of its shifting side ways or turning round
the spindle J, and at the same time determines the angle it is to be bored. The
plug is provided with the arm or lever by which it is withdrawn.
The vertical part of the carriage may be provided with a scale as shown in
Fig. 2 so that the movable disc f¹ can be turned to any desired angle allowing the
fitting to be bored with great accuracy. The scale may instead be formed on
the disc.
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:
:-
L..
(1). An improved device for use in holding, and centering fittings to be bored,
consisting of a frame having a suitable base,,,a carriage on the said base carried
on guides, a vertical tube fitted adjustably in the top of the said frame. through
which the boring tool is passed, a central spindle or tube on the carriage receiving
the fitting to be bored and means for securing the fitting firmly in the carriage
substantially as and for the purposes specified.
(2) In an improved apparatus for holding and centering fittings for boring,
the combination with a frame of suitable shape, a hole in the upper part of the
said frame screw threaded and provided with a smooth tapering part, of a
carriage sliding on guides on the said base, a central spindle fitted to the carriage
and receiving the fitting to be bored a plug carried by an extension on the
carriage holding one tube of the fitting, an adjustable tube secured to the frame
by means of a split tapering sheath, and an adjusting screwed ring belonging to
the frame, substantially as and for the purposes specified.
(3) In an improved apparatus for holding and centering fittings to be bored,
the combination with a frame or casting of arched shape, having a suitable base,
guides formed on the said base, a boss at the top of the frame, a hole in the said
boss the upper part of which is tapped, and the lower part smooth and tapering,
of a carriage on the guides, a spindle fitted to the carriage adapted to receive
the fitting to be bored, a disc carried by the spindle an extension on the disc
carrying a plug adapted to hold one part of the fitting, an adjusting tube through
which the boring tool passes holding the part of the fitting to be bored, a split
and tapering sheath, fitting in the tapered hole of the boss, and encircling the
tube and an adjusting screwed ring, all constructed and operating substantially
as described and shown, and for the purposes specified.
Dated this 20th day of December 1897.
.. TE
+1
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant...
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