Improvements in Apparatus for Making Umbrella Gits, Ribs, and the like.
Year: 1895

page_text: Date of Application, 22nd Aug., 1895-Accepted, 16th Nov., 1895
COMPLETE SPECIFICATION.
Improvements in Apparatus for Making Umbrella Gits, Ribs, and
the like.
A communication by JOSEPH VIREY and LÉON DUBOIS, both of 52 Rue Bichat,
Paris, in the Republic of France, Manufacturers of Umbrella Fittings.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors 6 Lord Street, Liverpool, and 6, Bank Street,
Manchester both in the County of Lancaster, 118 New Street, Birmingham in the
County of Warwick and 31 High Holborn in the County of Middlesex, Civil
Engineer, 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:-
The invention which forms the object of this application relates to an apparatus
for cutting out, perforating, fitting, and fixing the gits on the ribs of umbrellas.
The git on the frame of umbrellas is the picce fixed towards the middle of the
rib, and which receives the fork of the stretcher which is hinged at this point.
The improved apparatus is fixed on the frame of a machine for making ribs or
the like of umbrella frames, and receives its movement from the main shaft.
In the accompanying drawings
Figure 1 is a view in detail of the git;
Figure 2 is a side view of the apparatus showing the main shaft in cross section ;
Figure 3 is an enlarged view of part of Figure 2;
Figure 4 is another view of part of Figure 3
;
With this apparatus the fixing of the git is effected in the following manner.—-
The git which is made from a wire of suitable section wound on a bobbin is
perforated and cut out whilst a rib is striated at the place where the git is to be
fixed this rib is then pushed continuously forward until the git engages with, is
beut over and finally is fixed on to it.
During this time the ordinary parts of the machine shape the two ends of
the rib.
The various operations are effected during one revolution of the shaft. A.
The wire intended to form the git passes between two drawing rollers C and D,
Figure 3, which are driven by suitable gearing, the roller C being loose on its
shaft, whilst the roller D is keyed on its shaft.
Motion is imparted to these rollers by means of a rack, and toothed sector,
mounted loosely on the shaft of the roller D, the shaft being rotated by means of a
pawl operated by the toothed sector and a ratchet which is fixed on its axis.
The rack has a reciprocating movement imparted to it by a cam J, Figure 2,
fixed on the driving shaft A, the shape of this being so arranged as to cause at
each revolution of the shaft the wire to move forward to the extent necessary for
the formation of a git.
The git is perforated and cut off by means of a shaped knife E (Figure 4) and
two small punches F G (Figures 2 and 3) which are mounted on a common rod
which has a reciprocating movement produced by the action of two cams I H,
Whilst the git wire is being
Figure 2, of suitable shape mounted on the shaft A.
drawn by the rollers C and D, a metallic wire intended to form a rib, placed in the
ordinary draw plate of the machine is pushed forward by a suitable strip or flat
pusher K fixed on the carriage L forming part of the machine.

page_text: The carriage has also a reciprocating motion necessary for shaping the ends of
the ribs. The wire pushed forward by the pusher K is placed on a striated steel
block M, Figures 2 and 3, and during a temporary stoppage of the rib, a movable
steel punch N also striated on its end is pressed on the wire by means of a lever O
operated by the cam P.
The striated punch and block form on the rib the striations which serve to hold
the git in its place.
The wire having been striated in the manner described, the cam P continuing its
movement then allows the lever O to again descend and consequently the punch N
to release the wire. The carriage L then resumes its movement and pushes, always
by means of the pusher K, the wire against the git which has been perforated and
cut out as hereinbefore described and which stands in the position Q shown in
Figure 4.
The git is held in this position by a piece R and by the knife E which at this
moment remains stationary by reason of the form of the cams H I.
The carriage L continuing its movement pushes the wire against the git which
bends round it, and becomes fixed on the wire by being forcibly passed between the
steel parts ST, Figure 3.
The part S is fixed, the part T movable in a vertical direction. The latter is
held in the desired position for bending on and fixing the git, by the lever O which
is itself operated or supported by the cam P.
The git being fixed, the cam P continuing its rotary movement allows the lever O
to descend and consequently to release the piece T which rises by the action of
suitable springs and releases the rib and the git. During the operation of fixing
the git, the ordinary parts of the machine complete the formation of the ends of
the rib.
The carriage L then moves backward and the rib is expelled by the flat
ejectors U and V operated by two springs which have been compressed by the
forward movement of the carriage.
The operation is then completed, the rib, which is shaped at the ends and
provided with a git which is perforated and finally fixed, falling under the machine.
Another wire is then presented to undergo the same operations and become in its
turn a finished rib.
The apparatus hereinbefore described and shown in the accompanying drawings
is specially intended for perforating, cutting out, and fixing gits on umbrella ribs ;
it may however also be employed with or without modification for fixing similar
parts on any suitable sort of rods of any suitable metal.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondents, 1 declare that what I claim is :-
1. In an apparatus of the kind described the combination of the conveying or
drawing rollers (C & D) with a shaped knife (E) and two punches (F & G)
actuated by cams (HI) substantially as described.
2. The combination with the machine described in Claim 1, of a pusher (K)
fixed on a carriage (L), a striated block (M), a movable punch (N) and a lever (0)
connected with a cam (P) substantially as described.
3. The combination with the machine described in Claim 2 of the parts RS
and T and ejectors (UV), substantially as described.
Dated this 21st day of August 1895.
WM. P. THOMPSON & Co.,
Of 6 Lord Street, Liverpool, Agents.