Improvements in Pegging Machines.
Year: 1897

page_text: Date of Application, 18th Nov., 1897-Accepted, 8th Jan., 1898
COMPLETE SPECIFICATION.
Improvements in Pegging Machines.
1. ELOUILD DUPLESSIS, of No. 46 Napoleon Street, in the City of St. Hyacinthe,
in the County of St. Hyacinthe and Province of Quebec, Dominion of Canada,
Machinist, 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:-
-
My invention relates more particularly to the means for supporting the work
during the pegging operation, the means for trimming the driven pegs, and the
means for operating the trimmer; and the object of the invention is to improve
the construction and arrangements of these means whereby a better finished and
mere durable article will be produced, a great saving of time effected in the pegging
of each article, the liability of the trimmer to be damaged reduced to a minimum,
the speed of the machine graduated at will and the machine be more easily
manipulated than machines at present in use.
To these ends, the invention may be said, briefly, to consist in mounting a
swinging work-support or horn with its axis at an angle to the vertical line of
the machine. A trimmer preferably in the form of a toothed disc or saw of peculiar
construction, is mounted in the nose of the horn and is driven preferably at a
high rate of speed, its operating gear embodying a sheave and belt connection
in order that the trimmer, in the event of it coming in contact with any obstacle,
will be arrested while the belt can slip over the sheaves and the remaining driving
gear continue to run. A clutch block having a smooth surface preferably forms the
operative connection between the usual tight and loose pulleys, and the horn or
work support is of peculiar construction and embodies many features of novelty,
for full comprehension of which, however, together with the foregoing, reference
must be had to the accompanying drawings, forming a part of this specification,
in which,
Figure 1 is a side elevation of a pegging machine constructed according to my
invention.
Figure 2 a detail front elevation, partly in section, of a portion of the pedestal
of the machine.
Figure 3 a horizontal sectional view of the pedestal taken on line 3, 3, Figure 2.
Figure 4 a detail enlarged sectional view of the nose of the horn shewing the
trimmer and its carrying and retaining parts partly in elevation, and partly in
section.
Figure 5 a plan view of the nose of the horn.
Figure 6 a detail side elevation of the trimmer carrier.
Figure 7 a detail plan view of the removable bearing for the trimmer spindle
and carrier.
Figure 8 an enlarged transverse vertical sectional view taken on line 8, 8,
Figure 2.
As the awl, awl feed and driver and their carrying and operating parts form
Price 8717

page_text: no part of my invention, I will neither illustrate nor describe the same, my inven
tion being adapted to any well known form of awl, feed, and driver.
The pedestal b has a guiding section 6' formed upon the front thereof in which
a vertical sliding bar ba is loosely retained. A bracket 63 projects above and
adjacent to the upper end of such guiding section and a screw projects down-
wardly through this bracket.
A forwardly projecting bracket 66 is formed upon the sliding bar, 62, and near
the lower end thereof. This bracket is inclined downwardly to the angle at which
it is required that the horn or work support shall set, and has an opening through
it through which the lower diminished and screw-threaded end 67 of a conically
shaped standard 68 projects, being secured by a retaining nut, 69; such standard
extending upwardly obliquely to the vertical line of the machine, and at right
angles to the bracket. 66. The horn or work support c is formed with a rearward
extension c¹ having an upwardly off-set portion which extension, c', and off-set
portion are perforated to fit over the standard 68, while an off-set handle c is rigidly
secured to the front of the horn. A weighted lever is pivoted to a bracket e
secured upon the underside of the pedestal and is furnished with a treadle d',
and a link f, has its lower end pivotally connected to such lever d and its upper
end connected to the slide bar 62, near the lower end thereof, by means of a bolt 610
taking through an opening in the upper end of such link and screwed into the said
slide bar 6ª,
The horn is caused to hold the work against the underside of the head of the
machine with a variable degree of pressure by means of a helical spring e carried
upon a guiding spindle e¹ screwed into the bracket 63 near the outer end thereof,
such spring bearing at one end upon a disc Figure 8 adapted to slide freely
upon the said spindle but limited in its downward movement by a shoulder bis
formed on such spindle, while the other end of such spring bears upon a nut
screwed on to the upper screw-threaded end of the spindle. A bracket projection 615
is formed near the upper end of sliding bar 62 and such bracket has a perforation
through it, which receives the lower end of spindle e¹.
In order to adjust the normal height of the horn or work support, the screw b
should be adjusted up or down through the bracket b³ according as it may be
required to raise or lower the height of such horn. The upper end of the horn c
is cranked or off-set so as to bring the centre of the nose or work supporting
surface in the axial line of the conical standard 68 on which the horn rotates.
When the work is in place over the horn, the pressure of the weight upon lever d¹
will bear through the horn upon such work and while such weight. has been found
to be just sufficient to hold the work, when heavy, in place without injuring it,
it has also been found to injure light grades of work. To obviate this
difficulty, it will only be necessary to adjust the spring to offer sufficient
obviate this difficulty, it will only be necessary to adjust the spring to offer sufficient
resistance to the weight as to cause the horn to bear upon the work with just
sufficient force to resist the impacts of the awl and driver, without injuring the
work.
My improved trimmer consists of a rotary cutter, mounted in the nose of the
horn or work support c, preferably as follows:-The nose of the horn is recessed
to provide a shoulder Figure 4. A bearing socket g is set in this recess and
formed with shoulders g¹ and g² to rest, respectively upon the top edge of the nose
of the horn and upon shoulder, c. A central aperture go through this bearing socket
receives the spindle of the cutter, and circular recesses g 95 are formed concentric
with the spindle aperture g³, the inner recess receiving a downwardly pro-
jecting flange k¹ formed upon the underside of a bottom plate k of a rotatable cap
for the nose of the horn, the other recess 95 (which encircles the one, g³) serves as
a receptacle for the rollers or balls upon which the cap k bears, this bearing
socket being retained rigidly in place by a set-screw 96, screwing through a screw-
threaded opening in the horn and adapted to bear upon and pinch the side of said
bearing socket g. The spindle for carrying the cutter has its ends h¹ h³ diminished

page_text: and screw-threaded, while the body portion, h, thereof, is plain and slightly longer
than the combined depth of the bearing socket g and the thickness of the plate k.
A bevel gearr is screwed upon the lower diminished screw-threaded end h¹ of
he spindle and tightly against the shoulder formed by such diminished portion,
while the cutter is formed with a central screw-threaded opening through which
it is screwed upon the upper screw-threaded end 2 and tightly against the shoulder
below such end.
This cutter is formed of a central hub, m, and a ring m¹ having its inner edge
formed with saw teeth m²; the upper surface of such saw toothed ring being
located on a line with the upper face of the hub and is connected to such hub
by a series of bent arms or braces m³ secured rigidly to the underside of the
ring m¹ and to the lower edge of the hub m.
The rotatable cap has a dust guard in the form of a flange k² extending down-
wardly from the under side of the plate and adjacent to the upwardly curved
edge thereof and fitting closely round the upper edge of the bearing socket g;
the upwardly curved edge is extended inwardly at top to closely encircle the
cutter m m² and at the same time furnish a bearing surface for the work which
surface is at right angles to the axis of rotation of the horn. Sections of the bent
portion of the plate k are cut away to allow the peg-ends to escape from the chamber
formed by such turned edge k³. The required rotary motion is imparted to the
cutter through the bevel wheel r, mounted upon the lower end of the cutter spindle.
A bevel wheel r gearing with the wheel r is fixed on one end of a rod, 2, mounted
in bearings inside the horn, the other end of which rod carries a bevel wheel r³
fixed thereon. A bevel wheel, gearing with such wheel, 3 is fixed upon the
upper end of a rod, 5, also mounted at its upper end in a bearing inside of the horn
and having a sheave, 76, fixed thereon near the lower end thereof, while such lower
end projects through and has a bearing in the bottom of the horn. A pair of
sheaves are mounted in the lower portion of the horn and adjacent to such
sheave 6, and another sheave, 78, is fixed upon the forward end of the driving
shaft S of the machine, these sheaves being operatively connected together by
a belt 9
This driving shaft is carried in bearings as usual, near the foot of the machine
and has two pulleys S1 and S2, mounted on the rear end thereof, of which the
pulley S¹ is fast on the shaft and is connected by a belt t to a pulley t fixed upon
the counter shaft that operates the awl and driver (not shown) while the pulley, S³,
which is loose on the shaft, is connected by a belt to the source of power. The tight
pulley S has its face adjacent to the loose pulley made smooth, and the loose pulley
has a smooth faced projection S+ on the face thereof that is adjacent to the smooth
face of the tight pulley; a grooved extension $5 from the hub of S² is engaged
with a bell-crank lever v fulcrumed to a bracket v projecting from the rear side
of the foot of the machine, while its other arm projects forward of the machine
and is provided with a treadle v². On the depression of lever v the pulley S2 will
consequently be pressed with its face $ tightly against the face of S¹, and will
drive this by frictional contact.
It will be obvious that a machine constructed according to the foregoing will
be cheaper to construct, simpler and therefore easier to operate and capable of more
ready adjustment than the machines heretofore used or at present in use; further-
more, if any substance too hard for them to cut should obstruct the teeth of the
cutter then the teeth will not be damaged but the connection between them and
their driving gear will slip until the obstruction will have been removed; in
addition, my arrangement for starting the machine, consisting of the frictional
connection between the tight and loose pulleys S1 and S2, will enable the machine to
be started very gradually and run very slowly or at its highest speed, at will.
Many modifications can readily be made in the construction and arrangement
of the above described parts without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of my said
:

page_text: invention and in what manner the same is to be performed I declare that what
I claim is
1. In a pegging machine, a rotary cutter consisting of a ring formed with saw
teeth on its inner periphery and connected by bent or curved arms to a central
boss adapted to be mounted upon a spindle for imparting rotary motion thereto,
substantially as described.
2. In a rotary cutter such as is referred to in the first claim, arranging the central
boss so that its upper surface constitutes part of the support for the work, such
surface being in the same plane as the top surface of the cutter ring, substantially
as described.
3. In a rotary cutter such as is referred to in claims 1 and 2, connecting the
cutter ring to the central boss by means of curved or bent arms springing from
the lower end of the boss and extending up to the under side of the cutter ring,
so as to leave a perfectly free annular space between the cutter teeth and the
periphery of the boss, substantially as and for the purpose described.
4. In a pegging machine the combination of a rotary cutter such as is referred
to in claims 1 to 3 with the nose of the horn or work support of a pegging machine,
in which support is provided means for rotating the cutter, substantially as
described.
5. In a pegging machine, a nose of the horn or work support having two annular
concentric recesses operating in combination with a rotatable cap consisting of a
plate extending over the said recesses and having a downwardly projecting flange,
which plate rests upon a series of rollers located in the outer annular recess,
has its perforated outer edge bent first upward and then inward, so as to surround
a rotary cutter whose spindle passes down through a central hole of the nose and
is rotated by suitable means, substantially as and for the purpose set forth.
and
6. In a cap such as is referred to in the preceding claim a downwardly extending
flange on the periphery of the plate, overlapping the upper edge of the nose, sub-
stantially as and for the purpose set forth.
7. In a pegging machine a horn having its nose apertured and formed with
a recess in which is fitted a socket piece bearing with a lower annular shoulder
upon a seat in the nose, and with an upper annular shoulder upon the
top surface of the nose, which socket has two concentric annular recesses,
one of which receives an annular flange on the underside of a cap
such as is referred to in the fifth and sixth claims while the other
receives balls upon which the said cap rests, the said socket having a central
aperture through which passes the spindle of a cutter contained within the cap,
substantially as described.
8. In a pegging machine or the like, a horn or work support carried by a
vertically adjustable slide located in a vertical guideway formed upon the pedestal
of the said machine, a bracket secured to the said pedestal adjacent to one end
of said slide, a vertically adjustable stop carried by the said bracket in line with
the adjacent end of said slide, means for adjusting the said stop and means for
adjusting said slide to and from said stop, for the purpose set forth.
9. The combination of the pedestal b, vertical guideway 6, bracket 63, a sliding
bar 62, carrying a horn or work support, a vertically adjustable screw bs, a bracket
projection 615, a guiding spindle el having a shoulder 614, a perforated disc b¹³, a
nut screwed upon the said spindle below its carrying bracket, a helical spring e,
and treadle mechanism for adjusting said sliding bar, substantially as and for
the purpose set forth.
10. In combination with the pedestal and driving shaft of a pegging machine,
a bracket 66, a conical standard 8, a horn or work support formed with a perforated
rearward extenison c¹ and a perforated upwardly off-set portion ² both adapted
to fit over the said standard; the upper end of said horn being off-set and the
centre of the nose thereof located in the axis of rotation of said horn substantially
as and for the purpose set forth.

page_text: or
11. In a pegging machine, the combination, with the pedestal and driving shaft
thereof, of a vertically adjustable swinging horn or work support supported
from the pedestal by an adjustably yielding device; the work supporting
surface of such horn work support being set at an angle to the
horizontal line of the machine the axis of rotation of such horn or work-
support being at right angles to the work supporting surface thereof, a rotary
cutter mounted in the nose of such horn or work support, a cap encircling such
cutter and supported upon rollers carried in the nose of such horn; a rod or spindle
mounted in such horn and carrying a sheave rigidly upon one end thereof; an
operative connection between the said rod or spindle and the said cutter; a sheave
mounted rigidly upon one end of the driving shaft, and a belt connection between
said sheaves, substantially as and for the purpose set forth.
Dated this 18th day of November 1897.