Improvements in Rivetting Machines.
Year: 1894

page_text: Date of Application, 22nd June, 1894
Complete Specification Left, 9th Jan., 1895-Accepted, 23rd Feb., 1895
Improvements in Rivetting Machines.
I, BARTOLO LEOPOLD D'AUBIGNE, of No. 1, Worship Street, in the County
of London, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to rivetting machines and to that class of such machine in
which a vibrating hopper is pivotted to the race-way down which the rivets are
directed towards the anvil and punch.
Such hopper as heretofore constructed is provided with two guide grooves or
slots which meet at a point in the race-way or guide. At the meeting point of
these grooves or slots the race-way is of such width that two rivets will sometimes
get into the same side by side and jam; and, furthermore, an adjustable stop or
stud has to be employed beneath such meeting point, in order to prevent the heads
of the rivets from dropping into the broad part of the guide-slot; again in using
the machine if a rivet has not been sufficiently upset or inserted the jaws do not
close thus when the spindle moves upward out of the jaws allowing the rivets to
move toward the jaws which hold the rivets and jam.
Now the object of my invention is to obviate these defects and to this end 1
provide the improvements hereinafter described.
arrange the grooves or slots in the hopper to meet at a point within the same
instead of in the race-way and at the meeting point is a pivotted finger or switch
which allows only one of the slots in the hopper to be in communication with the
race-way at a time, the said finger cutting off communication between the other
slot and the race-way.
With this arrangement I ensure that rivets from each of
the slots shall not pass to the race-way at the same time whereby jainming is
avoided. Also by the use of this pivotted finger I render unnecessary the use of
the adjustable stud as the rivet in passing from the hopper to the race-way is in all
cases supported under its head. Over the meeting point of the slots in the hopper
I place a guard-plate which prevents the loose rivets in the hopper from impeding
the movement of the finger and of the rivets passing to the race-way.
In order to prevent several rivets from inadvertently passing to the jaws
beneath the plunger, I arrange in the race-way a spring-lever operated by the
spindle or plunger in such a manner that directly the said spindle or plunger
commences to move down the said spring-lever moves out of the race-way
and allows the rivets to move forward. On the upward movement of the spindle
or plunger the lever is released by the spindle and again holds the rivets in the
race way.
Dated this 99nd day of Luno 1801
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant..

page_text: Improvements in Rivetting Machines.
1, BARTOLO LEOPOLD D'AUBIGNE, of No. 1, Worship Street, in the County
of London. Manufacturer, 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 :—
My invention relates to rivetting machines and to that class of such machine in
which a vibrating hopper is pivotted to the race-way down which the rivets are
directed towards the anvil and punch.
Such hopper as heretofore constructed is provided with two guide grooves or
lots which meet at a point in the race-way or guide. At the meeting point of
these grooves or slots the race-way is of such width that two rivets will sometimes
get into the same side by side and jum; and, furthermore, an adjustable stop or
stud has to be employed beneath such meeting point, in order to prevent the heads
of the rivets from dropping into the broad part of the guide-slot; again in using
the machine if a rivet has not been sufficiently upset or inserted the jaws do not
close, thus, when the spindle moves upwant out of the jaws, allowing the rivets to
move toward the jaws which hold the rivers and jam.
Now the object of my invention is to obvinte these defects and to this en
I provide the improvements hereinafter described.
I arrange the grooves or slots in the hopper to meet at a point within the same
instead of in the race-way and at the meeting point is a pivotted finger or switch
which allows only one of the slots in the hopper to be in communication with the
race-way at a time, the said finger cutting off communication between the other
slot and the race-way,
With this arrangement ensure that rivets from each of
the slots shall not pass to the race-way at the same time whereby jamming is
avoided. Also by the use of this pivottel finger renler unnecessary the use of
the adjustable stud, as the rivet in passing from the hopper to the race-way is in
all cases supported under its head. Over the meeting point of the slots in the
hopper place a guard-plate which prevents the loose rivets in the hopper
from impeding the movement of the linger and of the rivets passing to the
race-way.
In order to prevent several rivets from inadvertently passing to the jaws
beneath the plunger, I arrange in the race-way a spring-lever operated by the
spindle or plunger.
To enable any invention to be fully understood 1 will describe the same by
reference to the necompanying drawing, in which:—
Figure 1 is a sectional plan of the hopper and race-way of a rivetting machine
with my improvements applied thereto :
Figure 2 is a sectional side elevation of the saine :
Figure 3 is a sectional plan of the front part of the hopper: and,
Figure 4 is a view similar to a part of Figure 2 shewing a different position of
the parts.
indicates the framing of the machine, the race-way down which the rivets
slide, e the plunger for driving and clinching the rivets, and d the hopper pivotted
at the upper end of the race-way. The general arrangement of which parts is well
known and requires no further description.
e, are the slots in the hopper which converge and lead into the slot in the
race-way, and is the finger or switch which I pivot at or near the point of
convergence in such a manner that, when it is in one position to allow the rivets to
slide from one slot e into the race-way, it closes the mouth of the other slot e, as
clearly shewn in Figure 3, whereby it will be readily understood that it will be
impossible for the rivets passing from the two slots e, e into the race-way to jam.

page_text: It will also be seen that the said finger or switch will be operated automatically by
the weight of the rivets bearing against it in one slot or the other.
is the guard-plate placed over the finger or switch for preventing the loose
rivets in the hopper from impeding the movement of the finger and of the rivets
passing to the race-way.
is the spring-lever which I arrange in the race-way for preventing several
rivets from inadvertently escaping from the race-way. This lever is pivotted at i
and adapted at one end to enter the groove or slot in the race-way to retain
the rivets and at the other end to be acted upon by the plunger c.
The operation of this lever is as follows, that is to say, whilst the plunger e is in
its raised position, the said lever occupies the position shewn in Figure 2: when,
however, the plunger moves down it impinges against the end of the lever hand
moves the other end out of the race-way so that the weight of the rivets in the
race-way causes the whole of them to move forward until the lowermost rivet
bears against the plunger, as shewn in Figure 4. On the upward movement of the
plunger the lever is released by the said plunger and again projects into the
race-way retaining all the rivets with the exception of, say, one or two which
slide down into such a position that the lowermost one will be moved forward by
the closing of the usual spring-jaws 7.
With this arrangement it will be understood that if, after the plunger has been
moved down and then partially raised, it is found that the rivet is not properly
driven or clinched so that the spring-jaws will not close, the rivets will not
escape from the race-way so that the plunger may be again moved down.
m is a spring-pusher which acts against the lever hand serves to move it in the
opposite direction to that in which it is moved by the plunger.
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 :-
1. In a rivetting machine of the kind in which a vibrating hopper is pivotted to
the race-way down which the rivets are directed towards the anvil and punch,
arranging the grooves or slots in the hopper by means of which the rivets are
directed into the race-way to meet at a point within the hopper, a pivotted finger
or switch being placed at the meeting point and operating as, and for the purpose,
set forth.
2. In a rivetting machine having an inclined race-way down which the rivets
are directed towards the anvil and punch, a spring-lever pivotted so that one end
can project into the race-way and that the other end shall be operated by the
plunger or punch on its downward movement, substantially as, and for the purpose,
described.
3. The improvements in rivetting machines substantially as hereinbefore
described and illustrated in the accompanying drawing.
Dated this 9th day of January 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.