Improvements in Machines for Forming the Heels of Lamp-chimneys.
Year: 1896

page_text: Date of Application, 28th Oct., 1896-Accepted, 13th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in Machines for Forming the Heels of
Lamp-chimneys.
I, GEORGE JAMES GAUBERT, of Montreal, in the Province of Quebec, Dominion
of Canada, Gentleman, 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 has for its object to provide a simple, and effective machine for
shaping the heels or necks of lamp chimneys generally during the process of manu-
facture, which act has hitherto been performed by hand, and requiring the services of
a skilled workman, the machine being also specially adapted for the shaping of the
heels of chimneys of the construction shown in Canadian Patent No. 46664, of
July 26, 1894, to Walter E. Mayo, in which a number of air inlets are formed at the
base by means of indentations in the edge thereof.
To such ends, therefore, the invention consists in a machine in which the main
feature is an expansible rotary interior spreader, over which the outer end of the bulb
of glass, while still soft and adherent at its opposite end to the blow pipe, is placed,
the spreader being normally in a contracted position until the bulb is in place, and
then expanded, the spreader nevertheless rotating permanently; a second feature
consisting in the arrangement of a series of stationary pins or projections in such
position relatively to the spreader that they will coincide with the edge of the chimney
heel, after having been fully acted upon by the spreader and by a subsequent pressure
of the heel against them, form the depressions required in the special form of chimney
above mentioned; while a third feature calls for the addition to the parts just
described of an exterior rotary former acting in conjunction with the spreader to
establish thickness of the heel, as well as to properly shape the outside surface thereof;
these, with other features of detail and general construction of the carrying frame and
operating parts being hereinafter more particularly described and pointed out in
the claims.
Having thus referred to the object and principle of my invention, I will now
describe what I consider to be the most practicable embodiment thereof in an operative
machine, reference being had to the annexed drawings, and forming a part of this
specification, in which like symbols indicate corresponding parts, where
Fig. 1 is a side elevation of the machine. Fig. 2 a front elevation thereof, and
Fig. 3 a longitudinal vertical section of same.
The frame of the machine, as shown, comprises a base plate a, and front and rear
standards a¹ and a 2 the standards providing bearings for an upper main operating
shaft b, which is tubular, and a lower counter-shaft c.
A driving pulley d, is carried by the main shaft b, as well as a gear wheel e,
intermeshing with a pinion c on the counter shaft, and through which the latter is
operated.
The main shaft b, is made tubular in order to receive a spindle f, which extends
through and projects beyond each end of same, and which has a feather and groove
connection f 2 therewith to allow of its sliding longitudinally therein while
rotated thereby.
The projecting rear end of the spindle f carries a pair of fixed collars g, between
which a collar h with projecting pins his held loosely in position, so that such
pins h¹ can be engaged by the slotted forked ends k¹ of one arm of a bell-crank

page_text: lever k fulcrumed at k2 to the rear standard a 2, the opposite arm being suitably
connected to a treadle or other usual operating means, not shown, for reciprocating
the spindle in a frontward direction, while a retractile spring m, having one end
attached to the lever and the other to the frame, serves to move the spindle in a
rearward direction and retain it normally in its rearward position.
On the front projecting end of the reciprocating spindle is arranged the spreader,
which consists of an expansible head, preferably made up of a central hub or carrier
section n, having a screw-thread connection with the spindle, and a number (three
being shown in this case) of centrifugally movable fingers n' preferably of bell crank
lever form with short and long arm portions pivotally connected at the end of the
short arm portion to the central hub section n, so that the ends of their longer and
forwardly-projecting arm portions will converge and be normally in contact with
each other at a central point in line with the axis of the reciprocating spindle.
Thus far, I have described mechanism sufficient to produce a new and useful result,
if centrifugal force alone were to be relied on to throw the spreader fingers outward,
but I nevertheless prefer, in order to avoid running the machine at a higher speed
than is necessary, to fulcrum the spreader fingers as at o, to lugs p, projecting from
the face of a disc p¹ rigidly secured upon the front end of the main driving shaft b, so
that they will be operated positively as levers and their long arms moved centrifugally
by frontward movement of the reciprocating spindle acting through the hub upon the
shorter arms.
In order to make the indentations in the edge of the heel, as called for in the special
construction of chimney before mentioned, a stationary ring or face-plate q is situated
in advance of the disc (being preferably formed in one with the front standards
through integral connecting arms 9') and having removably secured to its face by
screws a ring r, with any desired number of pin projections r 2 on its face in such
a position as to be in line with the edge of the chimney heel when spread to its full
diameter.
The outer peripheral edge of the ring r, projects sufficiently beyond the edge of the
stationary face plate q, to provide a journal bearing for the outer or exterior rotary
former or "fitter" for securing a uniformity of the outside or peripheral diameters
among the lamp chimney heels of any particular size, and such outer former or fitter
is preferably constructed as follows:-
An annular section or ring s, having a flange s' projecting frontwardly from its
inner peripheral edge and gear teeth s2, cut in its outer peripheral edge, is formed
with a recess 83 in its rear face to fit over the journal bearing formed by the edge of
the ring r, and is held in place so as to be rotatable thereon by means of a retaining
ring t, secured by screws t¹ to the rear face of the annular section s, and having its
inner edge overlapping the rear face of the journal bearing or ring r.
The outer former is rotated in an opposite direction to that of the inner spreader,
through a pinion u, on the counter shaft c, intermeshing with a second pinion u',
carried on a stub axle u 2, mounted in the front standard, which in turn intermeshes
with the gear teeth of the annular section s, of such former.
In explanation of the operation of the machine, it may be stated that both the
interior spreader and the outer former are permanently rotating in opposite directions,
but with the spreader normally in its contracted position, and, after the glass bulb has
been blown to the required size, and its outer end sheared off, such outer end is
introduced between the spreader and former and the spreader expanded by throwing
the sliding spindle frontward, and when the heel is formed, the bulb is pressed further
inward, so that the pins or projections 2 can make the required indentations in the
edge thereof if the chimney is to be of the special form before mentioned.
To secure accuracy in introducing the bulb between the spreader and former, so as
to be truly concentric with the spreader, I prefer to use guides or rests v, indicated
by dotted lines in Figs. 1 and 2, in which the blow pipe with bulb attached can be
placed, such guides being in proper position to secure exact alignment of the blow
pipe and spindle.
In order to provide for the formation of heels of different diameters, the interior

page_text: spreader, the ring with the projections and outer former are readily removable and
interchangeable with others of various sizes.
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. A chimney heel forming machine having an expansible rotary spreader for
acting interiorly upon the glass of the bulb forming the heel, with means for
forming indentations in the edge of such heel and for supporting and operating such
spreader.
2. In a chimney heel forming machine, the combination of a frame, a rotating shaft,
a reciprocal spindle carried by and rotating with such shaft, a number of centrifugally
movable spreader fingers pivotally connected with such spindle, one or more pin
projections from such frame, and means for reciprocating such spindle, for the purpose
set forth.
3. In a chimney heel forming machine, the combination of a frame, an expansible
rotary spreader formed of a number of centrifugally movable fingers normally
converging to a central point, one or more pin projections from such frame, and
means for carrying such fingers, means for retaining them in their normal position
and means for rotating the spreader, for the purpose set forth.
4. A chimney heel forming machine having an expansible rotary spreader for
acting interiorly, and an outer rotary former for acting exteriorly upon the glass of
the bulb forming the heel, said spreader and former rotating independently of each
other, and means for supporting and operating such spreader and former, for the
purpose set forth.
5. In a chimney heel forming machine, the combination of a frame, a rotating
shaft, a reciprocal spindle carried by and having an operating connection with such
shaft, a number of centrifugally movable spreader fingers pivotally connected with
such spindle an outer former rotatable independently of said spindle and carried by
such frame, and means for reciprocating said spindle, and means for rotating such
outer former independently of said spindle, and means for rotating said shaft, for the
purpose set forth."
6. In a chimney heel forming machine, the combination of a frame, bearings
carried by said frame, a main shaft and a countershaft mounted in said bearings, an
expansible rotary spreader carried by said main shaft, a rotary former carrier by said
frame, and encircling such spreader, and means for rotating said spreader and former,
for the purpose set forth.
7. In a chimney heel forming machine, the combination of a frame, bearings
carried by said frame, a main shaft and countershaft mounted in said bearings, an
expansible rotary spreader formed of a number of centrifugally movable fingers
carried by said main shaft, a rotary former carried by said frame and encircling
such spreader, and means for rotating said spreader and former, for the purpose
set forth.
8. In a chimney heel forming machine, the combination of a frame, an expansible
rotary spreader, formed of a number of centrifugally movable fingers normally
converging to a central point, one or more pin projections from such frame, a rotary
outer former carried by such frame, and means for carrying such fingers, and means
for retaining them in their normal position, means for rotating the spreader and outer
former, for the purpose set forth.
9. A chimney heel forming machine having an expansible rotary spreader for acting
interiorly, and an outer former for acting exteriorly upon the glass of the bulb
forming the heel, with means for forming indentations in the edge of such heel, and
for supporting and operating such spreader.
10. In a chimney heel forming machine, the combination of a frame, a rotating
shaft, a reciprocal spindle carried by and rotating with such shaft, a number of
centrifugally movable spreader fingers pivotally connected with such spindle, an outer
rotary former carried by such frame, one or more pin projections from such frame, and

page_text: means for reciprocating such spindle, and for rotating such outer former, for the
purpose set forth.
11. In a chimney heel forming machine, the combination of a frame, bearings
carried by said frame, a tubular main shaft and a counter shaft mounted in said
bearings, a reciprocating spindle carried within such tubular main shaft, and having
a feather and groove connection therewith, an expansible rotary spreader formed of a
number of movable fingers carried by a hub section mounted on the forward end of
such spindle, a rotary former carried by such frame, means for rotating such spreader
and outer former, and means for reciprocating said spindle, for the purpose set
forth.
12. In a chimney heel forming machine, the combination of a frame, bearings
formed upon such frame, a tubular main shaft, and a counter shaft located below such
main shaft, a reciprocating spindle carried within such tubular main shaft, and having
a feather and groove connection therewith, an expansible rotary spreader formed of a
number of movable fingers carried by a hub section mounted on the forward end of
such spindle, a rotary former carried by such frame, means for rotating such spreader
and outer former, and means for reciprocating said spindle, for the purpose set
forth.
13. In a chimney heel forming machine, the combination of a frame, bearings
formed upon such frame, a tubular main shaft and a counter shaft mounted in said
bearings, a reciprocating spindle carried within such tubular main shaft, projecting
beyond each end of same, and having a feather and groove connection therewith, a
pair of fixed collars carried by the rear end of such spindle, a bell-crank lever
fulcrumed to the rear standard and having one arm forked and engaging a loose collar
between such collars, the other arm being connected to a treadle, an expansible rotary
spreader formed of a number of movable fingers carried by a hub section inounted, on
the forward end of such spindle, a rotary former carried by such frame and means for
rotating such spreader and outer former, for the purpose set forth.
14. In a chimney heel forming machine, the combination of a frame, bearings
formed upon said frame, a tubular main shaft and a countershaft mounted in said
bearings, a reciprocating spindle carried within such tubular main shaft, and having a
feather and groove connection therewith, an expansible rotary spreader formed of a
number of centrifugally movable fingers carried by a hub section mounted on the
forward end of such spindle, a rotary former carried by such frame, means for
rotating such spreader and former, and means for reciprocating said spindle, for the
purpose set forth.
15. In a chimney heel forming machine, the combination of a frame, bearings
formed upon said frame, a tubular main shaft and a counter shaft mounted in said
bearings, a reciprocating spindle carried within such tubular main shaft and having a
feather and groove connections therewith, an expansible rotary spreader formed of
a number of movable fingers carried by a hub section mounted on the forward end of
such spindle, one or more pin projections carried by the frame, a rotary former carried
by such frame, and means for rotating such spreader and outer former, and means for
reciprocating said spindle, for the purpose set forth.
16. In a chimney heel forming machine, the combination of a frame, bearings
formed upon said frame, a tubular main shaft and a counter shaft mounted in said
bearings, a reciprocating spindle carried within such tubular main shaft, and having a
feather and groove connection therewith, an expansible rotary spreader formed of a
number of movable fingers carried by a hub section mounted on the forward end of
such spindle, a rotary former consisting of an annular section or ring rotatably carried
by such frame and encircling such spreader, means for rotating such spreader and
outer former, and means for reciprocating said spindle, for the purpose set forth.
17. In a chimney heel forming machine, the combination of a frame, bearings
formed upon said frame, a tubular main shaft and a counter shaft mounted in said
bearings, a reciprocating spindle carried within such tubular main shaft, and having a
feather and groove connection therewith, an expansible rotary spreader formed of a
number of movable fingers carried by a hub section mounted on the forward end of.

page_text: such spindle, one or more pin projections carried by the frame, a rotary former
consisting of an annular section or ring rotatably carried by such frame and encircling
such spreader, means for rotating such spreader and outer former and means for
reciprocating said spindle, for the purpose set forth.
18. In a chimney heel forming machine, the combination of a frame comprising a
base plate and front and rear standards, bearings formed upon such standards, a
tubular main shaft and a counter shaft located below such main shaft, such shafts
being mounted in said bearings, a reciprocating spindle carried within such tubular
main shaft and projecting beyond each end of same and having a feather and groove
connection therewith, a pair of fixed collars carried by the rear end of such spindle, a
bell-crank lever fulcrumed to the rear standard and having one arm forked and
engaging a loose collar carried between such collars, the other arm being connected to
a treadle, an expansible rotary spreader formed of a number of movable fingers
carried by a hub section mounted on the forward end of such spindle, a rotary former
carried by such frame, and means for rotating such spreader and outer former, for the
purpose set forth.
19. In a chimney heel forming machine, the combination of a frame comprising a
base plate and front and rear standards, bearings formed upon such standards, a
tubular main shaft and a counter shaft located below such main shaft, such shafts
being mounted in said bearings, a reciprocating spindle carried within such tubular
main shaft, projecting beyond each end of same and having a feather and groove
connection therewith, a pair of fixed collars carried by the rear end of such spindle, a
bell-crank lever fulcrumed to the rear standard and having one arm forked and
engaging a loose collar between such collars, the other arm being connected to a
treadle, an expansible rotary spreader formed of a number of centrifugally movable
fingers carried by a hub section mounted on the forward end of such spindle, a rotary
former carried by such frame and encircling such spreader, and means for rotating
such spreader and outer former, for the purpose set forth.
20. In a chimney heel forming machine, the combination of a frame comprising a
base plate and front and rear standards, bearings formed upon such standards, a
tubular main shaft and a counter shaft located below such main shaft, such shafts
being mounted in such bearings, a reciprocating spindle carried within such tubular
main shaft, projecting beyond each end of same and having a feather and groove
connection therewith, a pair of fixed collars carried by the rear end of such spindle, a
bell-crank lever fulcrummed to the rear standard and having one arm forked and
engaging a loose collar carried between such collars, the other arm being connected to
a treadle, an expansible rotary spreader formed of a number of centrifugally movable
fingers carried by a hub section mounted on the forward end of such spindle, one or
more pin projections carried by the frame, a rotary former carried by such frame, and
means for rotating such spreader and outer former, for the purpose set forth.
21. In a chimney heel forming machine, the combination of a frame comprising a
base plate and front and rear standards, bearings formed upon such standards, a
tubular main shaft and a countershaft located below such main shaft, such shafts
being mounted in such bearings, a reciprocating spindle carried within such tubular
main shaft, projecting beyond each end of same and having a feather and groove
connection therewith, a pair of fixed collars carried by the rear end of such spindle,
a bell-crank lever fulcrumed to the rear standard and having one arm forked and
engaging a loose collar between such collars, the other arm being connected to a
treadle, an expansible rotary spreader formed of a number of centrifugally movable
fingers carried by a hub section mounted on the forward end of such spindle, a rotary
former consisting of an annular section or ring rotatably carried by such frame, and
encircling such spreader, and means for rotating such spreader and outer former, for
the purpose set forth.
22. In a chimney heel forming machine, the combination of a frame comprising a
base plate and front and rear standards, bearings formed upon such standards, a
tubular main shaft and a counter shaft located below such main shaft, such shafts
being mounted in said bearings, a spindle carried within such tubular main shaft,

page_text: projecting beyond each end of same and having a feather and groove connection
therewith, a pair of fixed collars carried by the rear end of such spindle, a bell-crank
lever fulcrumed to the rear standard and having one arm forked and engaging a loose
collar between such collars, the other arm being connected to a treadle, an expansible
rotary spreader formed of a number of centrifugally movable fingers carried by a hub
section mounted on the forward end of such spindle, one or more pin projections
carried by the frame, a rotary former consisting of an annular section or ring rotatably
carried by such frame and encircling such spreader, and means for rotating such
spreader and outer former, for the purpose set forth.
Dated this 28th day of October 1896
BOULT & WADE,
Agents for the Applicant.