Year: 1888

page_text: bracket C is so shaped as to receive a vertical slide C', which embraces the excentric a¹
of the shaft A, and receives a vertical reciprocating motion from the rotation of that
excentric. The slide C carries, on its face, a horizontal pin c*, which is embraced by
a forked arm d, projecting from the rocking spindle D.-As, therefore, the slide C is
actuated by its excentric a', it will impart a reciprocating axial motion to the spindle D,
and thereby cause the burnishing plates to move over their work in concentric curves.
Thus, the travel of the one plate e* will cross the path of its adjacent plate, as the heel
under treatment receives, from the hands of the workman, an axial motion, for presenting
a fresh surface to the action of the compound burnisher.
In this way, the lines formed on the work, by the pressure of the burnishing surfaces,
will be immediately removed as the operation continues, with the like result as in the
before mentioned arrangements.
A modification of this simple reciprocating motion for the compound burnisher, to
produce the result just explained, is shown at Figs. 11 and 12.
Fig. 11 being a front view of the burnisher and the mechanism for working
it ; and
Fig. 12 a side view of the same.
Projecting rearward from the holder E, is a pin E¹, which enters a socket F carried
by a rocking pin G.-This pin is supported in bearings in a frame H, which is
mounted on a sleeve bearing of the main framing, and is adjustable thereon.-Ii is
through this sleeve bearing, and the upper part of the frame H, that the rotary shaft A
passes. The outer extremity of this shaft A carries a crank pin a*, which enters a slot
in an arm G¹, made fast to the rocking pin G.
It will now be understood that if the pin E of the burnisher is made fast in its
socket F, and rotary motion is imparted to the shaft A, the crank pin a* will, through
the arm G¹, rock the socket F, and consequently the burnisher, giving it a rapid
reciprocating motion. The adjustment of the frame H on its sleeve bearing, and also
of the pin of the burnisher holder in its socket, provides for the setting of the
compound burnisher to suit the requirements of the work.
It is found preferable that the burnishing plates shall work at an angle to the points
of the heel lifts, and this position illustrated by the diagrams 13 and 14 is readily
attained by the adjustment of the pin E' of the holder in its socket F.
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 burnishing machine, the combination of a double excentric driving shaft
with a rocking arm to which a burnisher is pivotted, such burnisher being also
connected, through a rod (sliding in guides carried by the rocking arm), with the
excentric shaft, whereby a compound reciprocating motion is imparted to the burnisher,
as and for the purpose above set forth.
2. The compound burnisher above described, composed of a series of independent
friction pieces set parallel to each other, and capable of sliding edgewise in their
holder, and yielding to the pressure of the irregularly shaped work presented to
them.
3. The compound burnisher above described, whether mounted so as to permit of
being actuated by a compound or by a simple reciprocating motion, as illustrated in
the drawings.
D
2011
1000
NEWTON & SON,
Agents for the Applicant.

page_text: surface is made, by preference, of a semi-cylindrical form, in cast steel, and with lugs
at back for pivotting it to the rocking arm D, and a forked lateral projection e, by
which it is loosely connected to a sliding rod F.
The rocking arm D is cast with a pair of lugs which form guides for the sliding
rod F. This rod terminates, like the rocking arm D, in a loop, which embraces the
bowl of the excentric a³. The opposite end of this rod F carries a cross head f, in,
which is fitted longitudinally a pin for entering a pair of slots formed in the forked
extension e of the burnisher E.
It will now be understood that by imparting rotary motion to the excentric shaft A, an
up and down motion will be given to the burnisher E through the rocking arm D
which carries it, while a lateral rocking motion is given to the burnisher E through
the sliding rod F. The compound motion thus imparted to the burnisher E permits
of the rapid burnishing of the heel of a boot, which is presented to the burnisher at
right angles to its vertical movement, and held firmly against its face.
I have said that the bracket arm is adjustable. This is for the purpose of raising
or lowering the burnisher to suit the convenience of the workman. It is fixed in any
desired position on its fulcrum by means of a clamping screw. c.
Fig. 4 shows a modification of the hurnisher E, its radius being enlarged to
render it better suited for burnishing broad surfaces, such as the waist, bottom, and
heel face of hoots and shoes.
Fig. 5 is a compound burnisher fitted to receive a compound motion similar to that
above described; and
it ;
Fig. 6 is a side elevation of the burnisher, and of the mechanism, for operating
and
Fig. 7 a front elevation of the burnisher.
It is with a view of facilitating the burnishing of what are known as Wurtemberg
heels, which present a double curved profile, that I use the compound burnisher which
I will now describe.
The operating surface of this burnisher is composed of a series of independent
friction pieces capable of yielding to the pressure of the work. These friction pieces are
represented in the drawing by steel plates e*, such as that shewn detached in plan and
elevation at Figs. 8. These plates are set up edge-wise, and parallel to each other, in
a holder E, which I mount in a forked rocking arm D. These plates e*, of which six.
are shewn in the drawings, are free to slide in grooves in the holder E, and they are
kept up to, or returned to their normal position in the holder, by means of pressure
springs e', Figs. 8, coiled around a guide rod, which projects rearward from the plate.
The guide rods of these plates pass through holes in a fixed guide bar e, forming part
of the holder, and in rear of this guide bar, stop pins are passed through the rods of
the plates, to limit their advance beyond the holder. This construction of the burnisher
allows of the burnishing surfaces yielding to the pressure of the boot heel, and
thereby working smoothly over the surface presented to their action, whatever may be
the profile given to the heel.
.
The holder E, being pivotted to the rocking arm D, will receive a vertical recipro-
cating motion therefrom, and the sliding rod. F, being connected by links to the
holder, will impart to the holder a rocking motion, which will cause the burnishing
plates to sweep over the work, and yield, while burnishing, to the curved surfaces of
the work pressed against them. An important advantage attendant on the use of the
burnishers above described is, that the lines they produce on the leather are no sooner
made, than they are obliterated, by reason of the lateral movement imparted, to the
burnishers while reciprocating.
I have said that the compound burnisher may be worked by a simple reciprocating
motion, in place of the compound motion above described; in such case, the holder E
is fixed excentrically-to-a-rocking-spindle-D; as shown-at-Figs: 9-and-10, Fig. 9 being
a side view of the holder and the mechanism for actuating it, and
Fig. 10 a plan view of the same.
This rocking spindle is supported in a sleeve bearing of the bracket C, which bracket
is supported on the sleeve bearing of the excentric shaft A, as before explained. This