Improvements in Edge Setting and Polishing Machinery.
Year: 1898

page_text: Date of Application, 26th May, 1898
PROVISIONAL SPECIFICATION.
Improvements in Edge Setting and Polishing Machinery.
JOSIAH MENTOR GIMSON, JOSIAH GIMSON, ARTHUR JAMES GIMSON, and SYDNEY
ANSELL GIMSON, Mechanical Engineers, of Messrs. Gimson & Company, Engine
Works, Leicester, do hereby declare the nature of this invention to be as
follows:-
-
This invention is particularly applicable to machines where a great number of
reciprocations or vibrations of any instrument or instruments may be required,
without increasing the speed of the operating shaft.
The following description will explain the method of applying this movement
and the mechanical means of producing it, and is here described in combination
with a machine of that class known as
Edge Setting Machines," for polishing
the edges of the soles of boots and shoes.
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A hollow shaft coned at each extremity on its outer diameter, the smaller ends
of the cones being in each case situate at the shaft ends, is mounted in similarly
coned bearings, bored out sufficiently deep to admit of considerable adjustment,
these bearings are closed at their outer ends thus providing a reservoir through the
interior of the shaft and in the ends of the conical bearings, for oil, which is
admitted through a hole or pipe attached to the solid end of bearing. Holes are
drilled through the excentric (described later) and into the reservoir in the shaft
centre, by which means thorough lubrication is attained by centrifugal force,
these bearings are carried by two arms from the frame of machine and in such a
manner as to provide for their rapid adjustment longitudinally to take up any
between their arms or supports and in close contact with them is mounted a
pulley with two excentrics turned on it, one on each side and set out opposite
to each other to balance the movement. As each of these two movements are
identical, it will only be necessary to describe one, for the purpose of this
specification.
wear:
Surrounding one of these excentrics is an adjustable "excentric strap" from
which depends a small arm or lever at the lower end of which is drilled a hole
and into this hole a pin centrally pointed at each end is fastened, this pin or
stud is fitted into correspondingly recessed adjustable lugs set out from one sido
of a double hollow sleeve, which is mounted loosely on a suitably situated hori-
zontal shaft and free to rotate thereon, the inner sleeve carrying one lug giving
bearing to one end of the centrally pointed pin, whilst the outer sleeve carries a
corresponding lug which gives bearing to the other end of said pin. On the
opposite side these sleeves carry two similar lugs which give bearing to a second
centrally pointed pin, which is fixed rigidly into one end of a link, so that by
adjusting one sleeve over the other longitudinally by screwing up a nut on the
inner sleeve which bears against the end of the outer one, all four points may
be regulated with the greatest facility and any wear taken up.
The free end of the link previously referred to is connected with one arm of a
vibrating lever by centrally pointed screws in a manner which is usual, by this

page_text: arrangement the vibrating lever is caused to give double the number of recipro-
cations that would be the case if connected directly to the excentrics.
A description of the movements produced by one turn of the operating shaft
will serve to make the foregoing clearer. Starting from the point when the
centre pointed screws in the vibrating lever and link are in a parallel line with
the centre of the lugs and shaft on which the compound sleeve is mounted, the
eperating excentric will be in its half way position or the middle of its throw,
and its dependant lever connected with the sleeve also in a central position with
regard to its reciprocation. At this point the end of the vibrating lever is furthest
away from the sleeve shaft centre, then as the operating shaft is rotated, one fourth
of its movement will cause the excentric to raise its dependant lever and turn the
sleeves, this will give movement to the lugs on the opposite side and cause them
to radiate downward and below the centre line of the fixed shaft, and cause the
link and vibrating lever to be drawn inwards or towards the centre of the fixed
shaft, one fourth of the further movement of the driving shaft will thrust the
vibrating lever out again to its furthest point and the continued movement of
the shaft & excentric will raise the lugs on the opposite side of the adjustable
sleeves, above the centre an equal distance to its movement below when the
vibrating lever is again drawn inwards & thrust outward a second time on one
rotation of the driving shaft.
Improvements in Edge Setting and Polishing Machinery.
We, JosIAI MENTOR GIMSON, JOSIAH GIMSON, ARTHUR JAMES GIMSON, and
SYDNEY ANSELL GIMSON, trading as Gimson and Company, (Leicester), Limited,
Engine Works, Vulcan Street, Leicester, in the County of Leicester, Mechanical
Engineers, 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 and is particularly applicable to edge setting and
polishing machines in which a greater number of reciprocations or vibrations of
the burnishing irons can be obtained without increasing the speed of the operating
shaft than is now the case. The following description and the sheets of drawings
accompanying this specification will explain the method of applying this extra
movement and the mechanical means or devices for producing it, in connection
with the head of what is known as a "Twin Edge Setting Machine," partly in
section.
Figure 1 is a rear elevation of the head of the machine;
Figure 2 a side elevation showing one of the burnishing arms and its con-
nection with the machine, and Figure 3 Sheet 2 is an enlarged view of the top of
the sleeves E, E fitting on the shaft F; and shewing the connection of said sleeves
to the arm D and link H, and the latter to the lugs I of the vibrating lever J.
In carrying out this invention the twin machine is constructed and arranged in
the following or similar manner. A hollow shaft A is employed, coned at each
extremity on its outer diameter (Figure 1) the smaller ends of the cones, a being in
each case situate at the shaft ends and mounted in similar coned bearings B held by

page_text: the clamps B*, said bearings are bored out sufficiently deep so as to admit of consider-
able endwise adjustment upon pressing the ends b₁, said ends being closed provide
reservoirs through the interior of the shaft A and for the ends of the conical bearings,
lubricating oil being admitted through the hole or pipe which is screwed into
the solid ends 6 of both bearings. The holes 3 drilled through the shaft A and
eccentrics C lead to the shaft centre 6 and so ensure thorough lubrication of the
hearings B of the machine by centrifugal force. Said bearings B are carried
within the two arms B¹ Figure 1 and in such a manner as to provide for their
rapid longitudinal adjustment. The driving pulley C is secured upon the centre
of the shaft A and between the eccentrics C₁ which are covered by adjustable
straps D, with arms D¹ and adjusting screws d, said eccentrics Care lubricated
through the holes 62 herein above mentioned. Through the lower end of the
arms D are holes & drilled out to receive the centrally pointed pins , which are
fitted into the corresponding recessed lugs G set out from one side of the sleeves E
and E¹ mounted as hereinafter further described on the solid shaft F carried in the
vertical uprights B¹. Upon the opposite side of the sleeves E and E are other
lugs G which are likewise recessed and give bearing to the centrally pointed
pins which as before stated carry the inner ends of the links H, said links
being secured by the other centrally pointed pins d' adjustable by the screw
nuts d, in the lugs I of the upper arms of the vibrating tool holding brackets J
carried upon the spindles i¹.
The sleeves E and E¹ fit one over the other and can be adjusted longitudinally
by turning the screw nuts h, the inner sleeve being turned so as to provide a
bearing for the outer sleeve which slides over it so regulating the points of the
centrally pointed pins d¹ and 2 to a nicety and thus take up any wear.
By the above arrangements double the number of reciprocations are given to
the vibrating tool holding brackets that would be possible if they were connected
directly to the eccentrics C, the movements 1 and 2 of which are indicated by
dotted lines in Figure 2 Sheet 1.
A description of the movements produced by one turn of the shaft A will make
the foregoing properly understood. Starting from the point when the centrally
pointed screws 3 of the lugs I and the link H are in a parallel line with the
centre of the lugs G₁, shaft F and sleeves E and E¹. The eccentrics C will be
in the middle of their throw as shown by full line Figure 2, as also will the links
and arms of the eccentric straps be in a central position with regard to their
reciprocation. The outer ends of the vibrating levers or tool holding devices J
at this point will be furthest away from the sleeve shaft centre, then as the
operating shaft A is rotated, one fourth of its movement will cause the eccentrics
to raise their dependant levers or lugs and turn the sleeves E and E¹, this gives
inmovement to the other lugs on the opposite side and causes them to radiate down-
wards to below the centre line of the fixed shaft F, when the links H and the
vibrating levers or tool holding devices I will be drawn inwards and towards the
centre of the said shaft F, another fourth of the further movement of the shaft A
will thrust the vibrating levers or tool-holding devices J out again to their
furthest point, and the continued movement of said shaft and eccentrics will raise
the lugs on the opposite side of the compound sleeves above the centre an equal
distance to its movement below and the vibrating levers J will be again drawn
inwards and move outwards again a second time upon one rotation of the shaft A.
Upon reference to the drawing it will be seen that the machine is protected by
a preferably cast iron cover K "shown in section," the bottom of which rests
within the rim of the tray L so providing a reservoir for the oil that may be
thrown off the working parts of the machine, and also keep the work from getting
soiled. The waste of oil is also prevented, and it can be drawn off through the
small pipe which may be provided with a suitable tap or extension for con-
ducting it to a suitable receptacle. The annular grooves 22 Figure 1 in the
vibrating levers or tool holding devices J allows of the oil to well circulate all

page_text: round the spindles ¹ upon which they are mounted, and also serves to lead any
surplus oil into the reservoir L.
Having now particularly described and ascertained the nature of this said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is:-
1. In an edge setting machine for polishing the edges of the soles or heels of
boots or shoes the arrangement of compound adjustable vibrating levers and links
carried on a centrally disposed horizontal shaft thereby obtaining a double
vibrating movement of the operating devices, substantially as described and illus-
trated in the figures of the accompanying drawings.
2. In an edge setting machine for polishing the edges of the soles or heels of
boots or shoes the arrangement of compound adjustable vibrating levers and links
carried on a centrally disposed horizontal shaft for obtaining a double vibrating
movement to the operating devices, and in combination therewith a hollowed cone
ended shaft carried in coned sleeves with closed lubricating ends having endwise
adjustment, a pulley and eccentrics mounted between the arms of the head of
the machine, adjustable straps attached by centrally pointed pins to the vibrating
movements, substantially as described and illustrated by the accompanying
drawings.
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