An App for Setting or Caking the Heads of Rivets.
Year: 1896

page_text: Date of Application, 20th Nov., 1896
1007
Ancantad
12th Nov 1007
We, Jons SMPSON MILLAR of 3 White Street, Partick, Glasgow, Engineer,
and WILLIAM SHARKIE of 69 Thomson Street Govan, Glasgow, Boilermaker, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an appliance for setting or caulking rivets especially
those which have been rivetted up by hydraulic power.
The device consists of a socket-piece having a tapered recess or socket at its
end in which is fitted a movable centre provided with three or other number of
holes for the reception of a corresponding number of rollers, balls or their equiva-
lent. The rollers are or may be provided with short spindles having tipered
ends which roll on the bottom of the recess or socket aforesaid. The roller and
centre piece are held in place by means of a metal ring or its equivalent secured
to the end of the socket-piece.
The socket-piece is so made as to be capable of fitting in any ordinary drilling
or boring or like machine and of being revolved thereby.
The rivets are set or caulked by merely placing the socket-piece against the head
of the rivet and then setting the socket-piece in rotation and at the same time
applying pressure to the rivet when the action of the rollers will effectually caulk
the rivet.
The socket-piece may be made expansible so as to do for different sizes of rivets.
Dated this 19th day of November 1896.
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.
An Appliance for Setting or Caulking the Heads of Rivets.
We, JOHN SIMPSON MILLAR, of 3 White Street, Partick, Glasgow, Engineer,
and WILLIAM SHARKIE of 69 Thomson Street, Govan, Glasgow, Boilermaker, do
hereby declare the nature of this invention and in what manner the same is to he
performed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to a device or appliance for setting or caulking the heads

page_text: AL
of rivets especially those which have been riveited up by hydraulic power.
present the rivets are caulked by hand and the caulking is frequently very unsatis-
factory. With our invention the caulking can be done by power the caulking
device for this purpose being merely fitted in any ordinary and suitable power
drilling or like machine.
And in order that our said invention may be properly understood we have here-
unto appended, by way of illustration or example, two sheets of drawings which
show methods of carrying our invention into effect or practice.
Fig. 1 is an elevation of the device.
Fig. 2 is a part vertical section of the device. The figure also shows the method
of its application.
Fig. 3 is a plan of the device.
Fig. 4 is an inverted plan of the device.
Figs. 6, 6 and 7 are detail views.
Fig. 8 shows in section, for the purpose of comparison, a plate with the usual
hand caulked rivet and also a machine caulked rivet.
Fig. 9 shows in part section and Fig. 10 in inverted plan a slightly modified
construction of the device.
Fig. 11 is a view of the centre piece c.
On the drawings the same reference letters wherever repeated indicate the same
or similar parts.
The devico Figs. 1 to 7 consists of a metal socket piece a having a tapered recess
or socket b at its lower end in which is fitted a movable centre e (shown also in
section and plan views at Figs. 5 and 6) provided with three or other number of
recesso (or holes) for the reception of a corresponding number of rollers e or
their equivalent. The rollers (eee also Fig. 7 which shows a roller in side and
ond view) are provided with short spindles e' having enlarged tapered or dove-
tail ends for retaining the rollers in position. These ends roll against the
side wall at the bottom of the recess or socket aforesaid. The rollers and centre
piece are held in place by means of a screw passed through the central hole
in the centre piece and into the body of the socket piece. The centre piece is
hollowed out at h.
The socket piece is unde so as to be capable of fitting in the ordinary power
drilling or boring machines generally used in hoiler and other shops for drilling
rivet holes and of being revolved thereby. The socket piece a shown on the
drawings is adapted to be fitted in the socket of an American Twist Drill Machine.
The modified construction of the device shown at Figs. 9, 10 and 11 differs
from the first construction in so far as the rollers e and centre c are held in place
by means of a metal ring f which is secured to the socket piece by scrows f. In
this case the rollers e may be made with spindles el having ends e which taper to
a point. The socket band centre e may also be slightly altered in shape.
A rivet is set or caulked by merely placing the socket piece against the head
of the rivet and so that the rollers a bear against the sides thereof, as shown at
Fig. 2 (Z being the rivet), and then setting the socket piece in rotation and at
the same time applying pressure to it. The notion of the rollers, as the socket
piece revolves, effectually caulks the rivet. Fig. 8 shows a rivet as it appears
when caulked up with the device. y Fig. 8 shows by way of comparison an
ordinary hand caulked rivet.
The socket piece may be made with its sides expansible on the same principle
as a universal drill chuck so as to take in different sizes of centre pieces c to suit
larger or smaller rivets.
The device whilst being specially applicable for use with the ordinary power
drills as used for drilling rivet and like holes can be adapted to be driven by any
other suitable machine or mechanism having proper means for elliciently rotating
and at the same time feeding forward or applying pressure to the socket pirer.
We do not confine ourselves to the special constructions of the device shown on
the drawings these constructions being merely shown by way of example.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we consider novel and desire to claim is:-
1. A rotating device or appliance for caulking or setting the heads of rivets
substantially as hereinbefore set forth.
2. A device for caulking or setting the heads of rivets comprising a socket piece
capable of being rotated, a centre, rollers or equivalent fitted in the centre and
means for securing the centre and rollers in place in the socket piece, substantially
as hereinbefore set forth.
Dated this 16th day of August 1897
H. D. FITZPATRICK,
70 Wellington Street, Glasgow, Agent.