Improvements in and connected with Portable Hammering and Riveting Apparatus.
Year: 1895

page_text: Date of Application, 22nd June, 1895
Complete Specification Left, 20th Mar., 1896-Accepted, 25th Apr., 1896
PROVISIONAL SPECIFICATION.
Improvements in and connected with Portable Hammering and
Riveting Apparatus.
I, FREDERICK JOHN ROWAN, of 121, West Regent Street, in the County of
Glasgow, North Britain, Engineer, do hereby declare the nature of this invention
to be as follows, that is to say :-
My said invention has for its object to improve the construction of portable
hammering and riveting apparatus, so as to render the same more efficient, more
convenient in use, and adaptable for various requirements, the improved apparatus
also comprising devices for trimming or finishing rivet heads.
In carrying out my invention a reciprocating hammer bar is employed and is
actuated by steam or other motive fluid in a cylinder, or by electricity operating
by means of a dynamo; and in combination with either kind of motor apparatus
holding-on electrio-magnets are employed to attach the machine to any steel or
iron structure.
In a steam-driven riveter constructed according to one modification provision is
made for placing the hammer bar, which is also the piston-rod, at any inclination
(within the range for which the machine is constructed) the cylinder being formed
with trunnions which are at right angles to its axis, and are held in bearings formed
on a ring fitted so that it can turn in a central opening in the plate or yoke
connecting the electro-magnetic pole pieces, the hammer bar working through
the ring.
In a second modification the neck or stuffing box of the cylinder is made
spherical externally and is held in a concave spherical bearing, the combination
forming a ball-and-socket joint allowing of the hammer bar being inclined in any
direction.
In a third modification the striking point of the hammer or riveting head
remains about the same for all inclinations. The connecting plate or yoke of the
electro magnet has fixed on it an annular bearing piece having an outer spherical
surface, or slotted portions of such a surface. The cylinder is formed with or has
fixed to it an annular spherical flange made with slots at about right angles to the
slots of the bearing piece, and the cylinder flange is connected to the bearing piece
by bolts passing through the two sets of slots, but not binding the parts together,
the cylinder being movable into different angular positions to the extent allowed by
the slots.
In a modification actuated by means of an electro motor, the hammering or
riveting piece is partly a flat bar which is gripped between two pulleys rotating
always in one direction and drawing the bar against the action of a strong helical
spring. Parts of the pulleys are of slightly diminished diameter and when these
parts come round the pulleys cease gripping the bar and its spring gives it the
hammering or riveting stroke. The motor is connected to a casing fixed to the
connecting plate or yoke of the holding-on electro-magnets, the casing containing
gearing by which the motion of the motor shaft is suitably reduced and com-
municated to the pulley shafts.
For trimming and finishing rivets I combine with hammering or riveting
apparatus such as is hereinbefore described, or I arrange to follow such apparatus,
parts to be attached to the structure by means of electro-magnets in the same way,

page_text: same.
and carrying a rotatable spindle like a drill spindle with mechanism for driving the
To the spindle a rose bit can be attached for trimming a rivet head, on
which it operates with concavely-shaped cutting edges, and for finishing or caulking
a rivet head there may be attached to the spindle a tool having a steel roller
concavely shaped to fit the rivet head, and which whilst being pressed is turned to
act equally on all parts of the rivet head.
The holder-up employed in riveting operations is attached to the iron or steel
structure by electro-magnets, and when it has to be applied in confined spaces, as
for example, within the opposite flanges of a bar of channel section, a bracket
piece of right-angle section is fixed to the side of the yoke of the electro-magnets,
and has a bolster or holding-up head fixed to it. The electro-magnets are made
to attach themselves so that the bracket and head enter between the flanges; and
a small block may be inserted between the bracket and the outer flange of the
channel bar.
Dated this Twenty-first day of June 1895.
EDMUND HUNT,
Applicant's Agent.
Improvements in and connected with Portable Hammering and
Riveting Apparatus.
I, FREDERICK JOHN ROWAN, of 121, West Regent Street, in the County of
Glasgow, North Britain, 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, that is to say :-
My said invention has for its object to improve the construction of portable
hammering and riveting apparatus, so as to render the same more efficient, more
convenient in use, and adaptable for various requirements, the improved apparatus
also comprising devices for trimming or finishing rivet heads.
In carrying out my invention a reciprocating hammer bar is employed and is
actuated by steam or other motive fluid in a cylinder or by electricity operating by
means of a dynamo; and in combination with either kind of motor apparatus
holding-on electro-magnets are employed to attach the machine to any steel or iron
structure.
Several modifications of apparatus as made according to my invention are shown
on two accompanying sheets of explanatory drawings, Figures 1, 2, and 3, on
Sheet, 1, thereof being side views of three modifications, Figure, 2, being partly in
section.
Figures, 4, 5, and 6, are sectional views of a fourth modification respectively as
taken at the lines a-a, b-b, c-c, in Figure, 7.
Figure, 7, is also a sectional view of the same modification, as taken at right
angles to Figures, 4, 5, and 6.
.
Figure, 8, is a sectional view of the fourth modification as taken at right angles
to Figure, 7.
Figure, 9, on Sheet, 2, is a sectional view of a fifth modification.
Figure, 10, represents a tool which may be applied in connection with the fifth
modification.
Figure, 11, represents a holder-up hereinafter described.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
In a steam-driven riveter constructed as shown in Figure, 1, provision is made
for placing the hammer bar, A, which is also the piston rod of a cylinder, B, at
any inclination within the range for which the machine is constructed. The

page_text: cylinder, B, is formed with trunnions, C, which are at right angles to its axis, and are
held in bearings, D, formed on a ring, E, fitted so that it can be turned in a central
opening in the plate or yoke, F, connecting the electro-magnetic pole pieces, H,
the hammer bar, A, working through the ring. The ring, E, is held in the yoke, F,
by a ring, G, forming a flange, fixed to it.
In the modification shown in Figure, 2, the neck or stuffing box, J, of the
cylinder, B, is made spherical externally, and is held in a concave spherical
bearing, K, fixed in the yoke, F, the combination forming a ball-and-socket joint
allowing of the hammer bar, A, being inclined in any direction.
In the third modification shown in Figure, 3, the striking point of the hammer
or riveting head, A, remains about the same for all inclinations. The connecting
plate or yoke, F, of the electro-magnet has fixed on it an annular bearing piece, L,
having an outer spherical surface, or slotted portions of such a surface. The
cylinder, B, is formed with or has fixed to it an annular spherical flange, M, made
with slots, N, at about right angles to the slots of the bearing piece, L, and the
cylinder flange is connected to the bearing piece by bolts (not shown) passing
through the two sets of slots, but not binding the parts together, the cylinder
being movable into different angular positions to the extent allowed by the slots.
In the modification shown in Figures, 4, 5, 6, 7, and 8, and which is actuated by
means of an electro motor (not shown) the hammering or riveting piece, A, is for
part of its length a flat bar which is gripped between two pulleys, P, and Q,
rotating always in one direction, and drawing the riveting piece against the action
of a strong helical spring, R, encircling the outermost part of the riveting piece
and held between the connecting plate or yoke, F, of the holding-on electro-
magnets, H, and a flange, S, on the piece or bar. Parts, P1, and Q 1, of the
pulleys, P, and Q, are of slightly diminished diameter, and when these parts come
round, the pulleys cease gripping the bar and the spring, R, gives it the hammering
or riveting stroke. The motor is connected to a casing, F 1, fixed to the yoke, F,
and containing gearing by which the motion of the motor is suitably reduced and
communicated to the pulley shafts, P 2, and Q 2. The gearing consists of a first-
motion shaft, T, which by a pinion, T 1, fast on it drives a spur wheel, T 2, fast on
a short shaft, T 3, having on it a pinion, T 4, which gears with a spur wheel, To,
on a short shaft, 16, having on it a pinion, T 7, gearing with a spur wheel, T 8,
fast on a sleeve, T 9, loose on a central trunk or tubular piece, F 2, in one with the
casing, F1, and acting as a guide for the riveting bar, A. The sleeve, T 9, has
formed in a piece with it a pinion, V, which gears with a spur wheel, V 1, on a short
shaft, V2, having on it a bevil wheel, V 3, driving a bevil wheel, V 4, on the
pulley shaft, P 2. The shaft, V 2, has on it a pinion, V 5, which drives a spur-
wheel, V 6, on a short shaft, V 7, having on it a bevil wheel, V 8, gearing with a
bevil wheel, V 9, on the pulley shaft, Q2. The casing, F 1, is made with an
extension or bracket, F 3, which forms a tail-guide for the hammer bar, A.
For trimming and finishing rivets I may combine with the hammering or riveting
apparatus, such as is hereinbefore described, or I may arrange to follow such
apparatus, parts to be attached to the structure by means of electro-magnets in
the same way and carrying a rotatable spindle with mechanism for driving the
same. As shown in Figure, 9, I may however alter the apparatus shown in
Figures, 4, 5, 6, 7, and 8, so as to be applicable for trimming and finishing rivets
as well as for riveting. The trunk or tubular piece, F 2, in this case is quite short
and the sleeve, T 9, is comparatively long and within the trunk and is driven by
the pinion, T 7, and spurwheel T 8, so as to act like a tubular drill spindle. To
the sleeve or tubular spindle, T 9, a rose bit, W, can be attached for trimming a
rivet head, on which it operates with concavely-shaped cutting edges and for
finishing or caulking a rivet head there may be attached to the sleeve or spindle, T 9,
a tool, W 1, (shown in Figure, 10) having a steel roller, W 2, concavely shaped to
fit the rivet head, and which whilst being pressed is turned to act equally on all
parts of the rivet head. The trimming tool, W, and the finishing tool, W 1, may
be detached, and the haminer bar, A, hereinbefore described, may be inserted in

page_text: the sleeve, T 9, for riveting, the reciprocations of the hammer bar, when suitably
fitted not being affected, to any great extent, by the rotation of the sleeve.
The holder-up employed in riveting operations is attached to the iron or steel
structure by electro magnets, X, and when it has to be applied in confined spaces,
as shown in Figure, 11, for example, within the opposite flanges, X 1, of a bar of
channel section, a bracket piece, Z, of right angle section is fixed to the side of the
yoke, X2, of the electro magnets, X, and has a bolster or holding-up head, Z 1,
fixed to it. The electro magnets, X, are made to attach themselves so that the
bracket, Z, and head, Z 1, enter between the flanges, X 1; and a small block, Z 2,
is inserted between the bracket and the outer flange of the channel bar.
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 and connected with portable hammering and riveting apparatus a recipro-
cating hammer or riveting bar forming the piston rod of a steam cylinder made with
trunnions held in bearings on a ring fitted to turn in a plate connecting electro
magnets substantially as and for the purposes herein before described with reference
to Figure, 1, of the accompanying drawings.
2. In and connected with portable hammering and riveting apparatus a recipro-
cating hammer or riveting bar forming the piston rod of a steam cylinder made
with an externally spherical neck or stuffing box held in a concave spherical bearing
in a plate connecting electro-magnets, the combination of the stuffing box and bearing
forming a ball-and-socket joint substantially as and for the purposes hereinbefore
described with reference to Figure, 2, of the accompanying drawings.
3. In and connected with portable hammering and riveting apparatus a recipro-
cating hammer or riveting bar forming the piston rod of a steam cylinder which is
made with an annular spherical flange connected to an annular spherical bearing
piece fixed to a plate connecting electro-magnets substantially as and for the
purposes herein before described with reference to Figure, 3, of the accompanying
drawings.
4. In and connected with portable hammering and riveting apparatus a hammer
or riveting bar moved in one direction by a spring, and in an opposite direction by
pulleys made with parts of slightly diminished diameter and driven through
intermediate gearing by means of an electro-motor, the hammer bar being also
combined with holding-on electro-magnets substantially as and for the purposes
herein before described with reference to Figures, 4, 5, 6, 7, and 8, of the accom-
panying drawings.
5. The combination and arrangement of parts constituting the portable apparatus
for riveting and for trimming and finishing rivets substantially as hereinbefore
described with reference to Figures, 9, and 10, of the accompanying drawings.
6. In and connected with portable hammering and riveting apparatus the
improved trimming tool comprising a rose bit with concavely-shaped cutting edges
substantially as hereinbefore described with reference to Figure, 9, of the accom-
panying drawings.
7. In and connected with portable hammering and riveting apparatus the
improved finishing tool comprising a forked piece armed with a steel roller con-
cavely-shaped substantially as herein before described and as shown in Figure, 10,
of the accompanying drawings.
8. In and connected with portable hammering and riveting apparatus the
improved holder-up substantially such as is hereinbefore described and as shown in
Figure, 11, of the accompanying drawings.
Dated this Nineteenth day of March 1896.
177
EDMUND HUNT,
Applicant's Agent.