Improvements in Heel Burnishing Machines.
Year: 1892

page_text: Date of Application, 1st Apr., 1892
Complete Specification Left, 2nd Jan., 1893-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in Heel Burnishing Machines.
I WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford,
in the County of Stafford, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to machines used for the purpose of burnishing or
finishing the heels of boots and shoes and consists in improving the construction of
that part of the machine which gives motion to the burnishing iron.
In a machine constructed to burnish two boot heels at the same time I arrange a
cranked shaft having two cranks opposite each other-(i.e. at an angle of 180° one
with the other)-in suitable bearings and give to it a rotating motion. From the
cranks I make connections by means of rods to two toothed segments mounted
preferably upon one pivot carried in the machine frame. The segments engage
with pinions mounted upon spindles carried in suitable bearings at the head of the
machine and upon the spindles are mounted burnishing levers which carry at their
ends burnishing irons.
For the purpose of being able to regulate the amount of movement of the
burnishing irons I provide slots in the toothed segments so that the connecting rod
end pins may be set nearer to or further from the pivot which carries the toothed
segments and so increase or diminish the lengths of the arcs in which the teeth of
the segments move.
The arrangement of the parts is such that when the crank shaft is revolved con-
tinuously in one direction the two connecting rods will move in opposite directions
so that the movement of the one balances the movement of the other and they are so
connected to the toothed segments which gear with the pinions that the burnishing
levers move alternately both inwards, or towards each other, together and both
outwards, or away from each other, together.
If desired eccentrics may be used instead of cranks and the throw of the
eccentrics may be made capable of adjustment by means of a wedge and lever or
equivalent arrangement instead of having slots in the toothed segments.
The segments may if desired be mounted on separate studs and may be connected
to a balanced crank disc having an adjustable crank pin.
Dated this 31st day of March 1892.
W. H. DORMAN.
COMPLETE SPECIFICATION.
Improvements in Heel Burnishing' Machines.
I, WILLIAM HENRY DORMAN, of The Hawthorns, Newport Road, Stafford,
in the County of Stafford, 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:-
This invention relates to machines used for the purpose of burnishing or
finishing the heels of boots and shoes and consists in improving the construction of
that part of the machine which gives motion to the burnishing iron.
The object of the invention is to balance the reciprocating parts so as to prevent
oscillation or vibration of the machine and is effected by so constructing the
burnishing arrangements that one moving part is balanced by another similar one
moving in an opposite direction.
In a machine constructed to burnish two boot heels at the same time I arrange a

page_text: cranked shaft having two cranks opposite each other (i.e. at an angle of 180° one
with the other) in suitable bearings and give to it a rotating motion. From the
cranks I make connections by means of rods to two toothed segments preferably
upon one pivot carried in the machine frame. The segments engage with pinions
mounted upon spindles carried in suitable bearings at the head of the machine and
upon the spindles are mounted burnishing levers which carry at their ends
burnishing irons. For the purpose of being able to regulate the amount of move-
ment of the burnishing irons I provide slots in the toothed segments so that the
connecting rod end pins may be set nearer to or further from the pivot which carries
the toothed segments in order to increase or diminish the lengths of the arcs in
which the teeth of the segments move.
The arrangement of the parts is such that when the crank shaft is revolved
continuously in one direction the two connecting rods will move in opposite directions
so that the movement of the one balances the movement of the other and they are
so connected to the toothed segments which gear with the pinions that the burnishing
levers move alternately both inwards or towards each other together and both out-
wards or away from each other together.
If desired eccentrics may be used instead of cranks and the throw of the eccentrics
may be made capable of adjustment by means of a wedge and lever or equivalent
arrangement instead of having slots in the toothed segments.
The segments may if desired be mounted on separate studs and may be connected
to a balanced crank disc having an adjustable crank pin.
Fig. 1. is a side elevation and
Fig. 2. a back elevation of my improved machine. The driving pulleys and back
gearing being omitted in the back elevation.
Figs. 3. 4. 5. 6 and 6ª are views shewing the arrangement when eccentrics are
used instead of cranks.
Figs. 7 and 8. shew the segments mounted on separate studs and a balanced
crank disc.
A. (Figs. 1. and 2.) is the base. B. the pillar, C. C' the heads, D. D' the back
brackets and E. E¹ the jack guides which constitute the frame of the machine.
The driving pulleys F. F give motion to the crank shaft G. which is carried in
the bearings H. H'H². The cranks I. I' are opposite each other and operate
connecting rods J. J₁ the upper ends of which are jointed on pins K. K¹ to the
toothed segments L. L' which are mounted on a pivot M. carried by a bracket N
from the heads C. C' of the machine. The teeth O. O' of the segments L. L'
gear with the pinions P. P¹ which are mounted on the head spindles Q. Q' carried
in the bearings R. R¹ R2 R3 in the machine. The spindles Q. Q¹ carry the
burnishing arrangements S. S¹ and irons T which operate upon the boot heels U.
These burnishing arrangements may be of any suitable construction as may the
jacks or boot holders V which may carry the boots and also the automatic arrange-
ment W for giving the to and fro movement to the jacks V.
For the purpose of being able to vary the travel or throw of the segments L. L'
and consequently the amount of movement of the irons T upon the boot heel
slots XX are formed in the segments L. L' in which the pins K. K' may be
adjusted nearer to or further from the pivot M on which the segments LL¹
oscillate.
The crank shaft G. revolves continuously in one direction while the connecting
rods J. and J¹ move in opposite directions. The rod J. is connected to the
segment L on the same side of the pivot M as are the teeth O and the rod J¹ is
connected to the segment L' on the opposite side of the pivot M to the teeth 0¹ so
that the pinions P and P¹ are, together with the spindles Q and Q¹ and the
burnishing arrangements S. S¹, caused to turn in opposite directions so that the
movement of the one arrangement balances the movement of the other.
In the alternative arrangement shewn in Figs. 3. 4. 5. 6 and 64 the driving
shaft G', which is carried in the bearings H. H' in the place of the crank shaft G.
has formed upon it a square portion a on which are mounted so as to be free to

page_text: slide endwise on the shaft, double wedge or inclined pieces b¹ also of a square or
rectangular cross section. These pieces bb carry two eccentrics c. c' which are set
opposite each other and by means of eccentric rods d. d', jointed at their upper ends
on pins to segments L' L³, mounted as before on the pivot M, operate
through the pinions P. P' as before described the burnishing arrangements S. S¹.
The eccentrics c. c are mounted on the pieces b. for the purpose of enabling
their throw to be adjusted and consequently the amount of the movement of the
burnishing irons T upon the boot heels U to be regulated. The piece b is connected
to the piece by small cross plates e. el and screws f so as practically to form one.
It is furnished with collars with which engages the fork h of a lever i which is
pivotted on a pin j carried in a bracket attached to the machine frame and a
screw carried in a tapped hole m in the bracket kengages by collars n n¹ a
trunnion piece o carried in the other end p of the forked lever i. A hand wheel q
serves to revolve the screw and operate the forked lever i so as to slide the
pieces b. 6 upon the shaft G₁ and so increase or diminish the throw of the
eccentrics c. c. To prevent the eccentrics travelling end wise with the wedge
pieces .strips r. are formed on or attached to the shaft G which fit closely
against the sides of the eccentrics. The eccentrics may be split or made in halves
for convenience of manufacture if desired.
In the construction shewn in Figs. 7 and 8 the segments L*, L' are mounted on
separate studs M¹ M' carried in the machine frame and are connected by
rods J J and joint pins to a balanced crank disc s. The crank pin t which
engages the lower ends of the rods J2 J3 is capable of adjustment in the slot u
formed in the balanced crank disc s for the purpose of regulating the throw of the
segments L L and consequently of the burnishing irons T.
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.
In a machine for burnishing the heels of boots in which two burnishing irons are
in operation at the same time.
1. The use of two cranks or eccentrics set at an angle of 180° with each other
and connected to the segments in the manner described so that the burnishing
spindles shall move in opposite directions.
2. The arrangement of eccentrics for operating the burnishing movement with
the adjustment for regulating the amount of the movement. Substantially as
described.
3. The arrangement of toothed segments on separate studs with connections to
the balanced crank disc. Substantially as described.
Dated the 31st day of December 1892.
W. H. DORMAN.