Year: 1897

page_text: Date of Application, 9th Mar., 1897-Accepted, 29th May, 1897
1, EDWARD WALSH, Jr., of Chemical Building, in the City of St. Louis, State
of Missouri, United States of America, Manufacturer of Glass, 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,
reference being had to the accompanying drawings forming part thereof,
wherein :-
Figure 1 is a side elevational view, partly in section.
Figure 2 is a cross-sectional view on line 2-2, Figure 1.
Figure 3 is a horizontal sectional view, showing the plan of the elevator and
travelling bars.
Figure 4 is a side elevational view of the elevator, somewhat enlarged.
Figure 5 is an enlarged sectional view through the elevator and stationary bars,
looking from the end of the kiln.
Figure 6 is a cross-sectional view through the elevator bars, on line 6-6,
Figure 4.
Figure 7 is a cross-sectional view through the travelling rods.
Figure 8 is a side elevational view of the end of the travelling rods.
Figure 9 is an edge view of the cam sleeve.
Figure 10 is a side elevational view of the means for operating the cam-rods.
Figure 11 is a sectional view through the side wall of the kiln, showing one of
the I-beams projecting, which beam forms a support for the bearing of the
screw-rod.
This invention relates to a new and useful improvement in annealing kilns for
plate glass, and consists in the construction, arrangement, and combination of the
several parts, all as will hereinafter be described, and afterwards pointed out in
the claims.
In the drawings, 15 represents the kiln walls which are provided with peep- or
operating-holes 16 at convenient points, through which the operator may see and
manipulate the plates of glass.
Just to the rear of the floor 17 at the front of the kiln, upon which the plates
are first placed in introducing them into the kiln, is an elevator-pit, in which is
located an elevator, hereinafter more fully described.
Beneath the elevator-pit are arranged the air and gas flues, 18 and 19, respectively,
and the combustion chamber 20. The products of combustion pass rearwardly
through the flues 21, arranged beneath the floor of the kiln-way and which are
formed by the partitions 22, to a stack (not shown) but which is located at the rear
end of the kiln-way.
In line with the floor 17, are stationary bars 23, which are mounted in bar-rests 24,
arranged on suitable supports, preferably in the form of I-beams, 24, which extend
transversely the elevator-pit, and are mounted in boxes arranged in the side walls
of the kiln.
Bars 23 are composed of two side plates 25, which are preferably in the form of
angle-irons, between which is arranged a rod 26, which is of less height than the
angle-irons, but which spaces the angle-irons for the reception of non-heat-conducting
material in the form of fire-bricks 27, which are arranged thereabove and
between the angle-irons. Bars 23 are loosely seated in jaws 28, of the bar-
ests 24 and this connection permits longitudinal expansion without unduly cra'aping
he bars.

page_text: The elevator consists of a series of bars 29, which are composed of side angle-
irons 30, an interposed rod 31, to which the side angle-irons 30 are attached by
bolts 30, and non-heat-conducting material in the form of fire-bricks 32, which are
supported on the rods 31 and clamped between the angle-irons 30, said bricks
extending above the upper edges of the angle irons. Rods 31 have projections or
extensions 33 arranged along their length, an 1 which are preferably slotted longi-
tudinally to receive pins on the elevating arms 34. In a position of rest, these
elevator bars are supported on table-like extensions 24* of a stationary bar rest 24,
as shown in Figure 5, so that the elevator bars will be slightly below the plane of
the stationary bars 23, whereby when the glass is placed upon the bars 23, it may
be pushed back onto the bars 40, without contacting with the elevator bars, or the
elevator hars, being raised, will elevate the glass so that it can be pushed back ont
the travelling bars 40, as shown by the dotted lines in Figure 4.
Elevating arms 34 are mounted upon rock shafts 35 journallel in suitable bearings,
which shafts are transversely disposed across the elevator-pit, and project out beyond
the side walls of the kiln, where they have mounted upon their ents, rock-arms 36.
The ends of rock-arms 36, are connected by a link 37. The elevator is operated by
cylinders 38, one preferably being on each side, the pitmen of which cylin lers are
connected to rock-arms 39. Suitable valves, and supply and exhaust pipes are
provided for the cylinders (not shown) and the cylinders are preferably pivoted
in a frame so as to have an oscillating movement, for obvious reasons.
Upon admitting pressure above the piston, the elevator rises, and the plate of
glass may be shoved on the upper tier. Gradually exhausting the pressure from
nhove, and admitting it at the lower end of the cylinder, will restore the elevator
to its normal position.
The kiln shown in the drawings, is provided with two tiers of travelling
bars, 40 and 40%, which extend from the elevator-pit to the rear en⋅l of the kiln.
The travelling bars of these tiers consist of two plates 41, preferably in the shape
of angle-irons, which confine between them, at suitable distances apart, cam-
blocks 42, secured in place by through-bolts 45. These cam-blocks are recessed
as at 43, at their upper ends, in which recesses are supported strips 44, extending
from bluck to block. To support these strips between the blocks, through-bolts 45
are arranged beneath them, said bolts passing through the angle-plates 41, and
serving the dual function of supporting the strips 44, and clamping said strips and
fire-bricks between the angle-plates. Above the strips and cam-blocks, fire-bricks 46
are placed, the upper edges of which extend above the angle-irons.
The travelling bars, through the medium of their cam-blocks, rest loosely upon
oppositely-centered cams 47, mounted upon transversely-disposed shafts 48, with
the exception that, at their extreme ends, preferably the rear ends, the cam-blocks
enclose the cams by straps 49. In this manner, the alternate bars of a series have
an apposite cyclical movement in the same direction, i.e., one set being up when the
other is down, said movement being directed from one end only, the free end following,
but being permitted to expand and contract independently of the cams.
This
construction permits varying expansions and contractions of any of the bars without
affecting the others, which expansion would cause the bars to warp or buckle,
tending to bind their movements.
The cam-shafts 48 are mounted in suitable bearings 49, which are arranged
between I-beams 50, said bearings being located at different points along the shafts,
as shown in Figure 3. These cam-shafts extend out beyond the wall of the kilo,
at one side, and have mounted upon their ends, worm-wheels 51.
One of the I-beams 50 also extends out beyond the side wall of the kiln, as at 52,
and affords a support for a bearing 53, in which is mounted a shaft 54, running the
length of the kiln, upon which shaft are mounted worm-screws 55, gearing with the
wheels 51. In this manner the cam-shafts are operated, it being of course under-
stood that the two tiers are independent of each other, in order that they may
be run at different speeds. Any suitable power may be employed to rotate the
worm-shaft 54.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
1. In an annealing kiln, the combination with cams which are alternately
oppositely-centered, and the means for revolving said cams, of travelling hars
which rest upon the cams through the medium of cam-blocks, and a strap on some.
of said blocks for connecting one end only of said bars to the cams, substantially as
described.
2. In an annealing kiln, the combination with a series of travelling bars, of means
for imparting a cyclical movement to said bars, said means comprising a series
of oppositely-centered revolving cams to which are imparted complete revolutions,.
said bars being connected at one of their ends only to a set of cains, substantially
as described.
3. The combination with side plates, of cam-blocks arranged between said plates
at different points, strips which are supported by the blocks, and non-heat-conducting
material which is arranged above the strips and between the side plates continuously
the length of the strips, substantially as described.
4. The combination with angle-irons forming side plates, of cam-blocks arranged
therebetween at different points, strips which are supported at their ends by the
blocks, bolts passing through the side plates and under the strips for supporting
the middle portion of the strips, and non-heat-conducting material between the side
plates and on the strips, substantially as described.
5. In an annealing kiln, the combination with the stationary bars 23, of bar
rests 24 for supporting the same, elevator bars 29, which normally rest upon table-
like extensions 24 extending from said bar rests, below the plane of the supports
for the stationary bars 23, and means for operating the elevator bars, substantially
as described.
6. In an annealing kiln, the combination with the stationary bars, of bar rest:
therefor which permit expansion and contraction of said stationary bars, elevator
bars which normally rest upon table-like extensions extending from said bar rests
bel..w the plane of the supports for the stationary bars, slotted projections extending
down from said elevator bars, and elevating levers having pins in the ends which
pass through said slots for permitting expansion and contraction of said bars, and
at the same time forming a connection which permits the elevating levers to swing
and raise the elevator bars, substantially as described.
7. The combination with stationary bars which consist of two side plates, a rod,.
and non-heat-conducting material between the plates, of bar rests provided with
jaws to receive said bars, and having an independent support for the movable.
elevator bars, in a plane below the jaws for the stationary bars, and elevator bars
which are supported in their normal positions upon said independent supports,.
substantially as described.
8. The combination with cam-shafts which extend transversely the kiln, of cams
mounted on said shafts, travelling bars which are actuated by said cams, bearings
for said shafts, worm wheels on the ends of the shafts, I-beams for supporting the
bearings, said beams extending out beyond the side wall of the kiln, bearings on
Baid projecting ends, and a worm-shaft mounted in said bearings, substantially as
described.
9. In a kiln, the combination with the walls, of beams which extend from wall to
wall and project outside, travelling bars arranged in the kiln, and means for
actuating said travelling bars, said means being mounted upon the projecting ends
of the beams, substantially as described.
PHILIP M. JUSTICE,
London, Chartered Patent Agent,
For the Applicant.