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Патент USA US3084734

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April 9, 1963
Filed Jan. 25. 1960
2 Sheets-Sheeti
ZZM 57w '
April 9, 1963
3,084, 720
Filed Jan. 25. 1960
2 Sheets-Sheet 2
_.-_ _
By’? 'MX’M
United States Patent O?ice
Patented Apr. 9, 1963
the line wires 12 and extend periodically through the
Adolph H. Yaeger, Santa Clara, Caiif., assignor to Key
stone Steel & Wire Company, Peoria, £11., a corporation
of Delaware
Filed Jan. 25, 1969, Ser. No. 4,248
5 (Ilaims. (til. 140-3)
slits 15 to be intertwisted with the ‘line wires 12 at twist
points 17. With this construction, the fabric is securely
held on the backing sheet but is capable of limited move
ment relative to the backing sheet to give it a certain
desired degree of ?exibility for installation.
The lathing is completed by a second backing sheet 18
which is adhesively secured to the back of the ?rst backing
sheet 14 overlying the retaining wires 16. The second
and more particularly to a machine for automatically and 10 backing sheet 18 is preferably of waterproofed paper to
continuously forming paper backed metal mesh lathing.
provide a vapor barrier.
Paper backed metal mesh lathing has found increasing
The machine of the present invention, on which this
acceptance in the plastering industry, both for interior
lathing material is formed, is shown generally in FIG
work and for exterior stucco work. One type of lathing
URE l as comprising an upright frame 21 for supporting
which has been found very successful is that particularly 15 rolls of paper 22 and 23 of the type employed in the back
described and claimed in the patent of Dahlhauser and
ing sheet 14. Two rolls are shown for formation of two
Yaeger, No. 2,929,239. In such lathing, a metal mesh
strips of lat-hing simultaneously side by side in the appa
fabric overlies one face of a paper sheet and is secured
ratus although this is not essential.
thereto by retaining wires on the other face of the sheet
As shown, paper from the roll 22 is taken off from the
extending through openings in the sheet and secured to 20 bottom of the roll, as indicated at 24, ‘and is passed over
the fabric as by intertwisting therewith. A second im
a back up roller 25, which is engaged by an oifset printing
perforate sheet is adhesively secured over the ?rst paper
roller 26. In passing around the roller 25, the paper will
sheet and the retaining wires to provide an imperforate
be printed and then passed ‘back around the roll and again
vapor barrier. The present invention relates particularly
off the bottom of the roll over the top of a guide roll 27.
to a machine for forming lathing of this type.
25 Paper from the roll 23 may be printed by similar printing
It is one of the objects of the invention to provide lath
mechanism, not shown, and directed over the guide roll
ing forming apparatus in which paper backed metal mesh
27. The paper is held on the guide roll 27 by a retaining
lathing is ‘formed rapidly and continuously in an automatic
roll 28 which carries slitting knives to form the slits 15
and passes vertically downward between the guide roll
Another object is to provide lathing forming apparatus 30 and retaining roll onto and beneath \a depressor roll 29.
in which the paper sheets, wire mesh fabric and retaining
As the paper passes under the depressor roll, it passes
This invention relates to lathing forming apparatus
wires are fed continuously over rollers on which they are
over a conveyor 31 which is formed at a plurality of
assembled with the retaining wires being intertwisted with
spaced points in its length with twister heads 32 of con
the fabric and with the second paper sheet adhesively
ventional construction. The twister heads are preferably
secured to the ?rst paper sheet over the retaining wires.
35 made, as best seen in FIGURE 4, with open slots in their
The above and other objects and features of the inven
tops and with cavities receiving pinions 33 which are also
tion will be more readily apparent from the following
formed with slots extending diametrically partially there
description when read in connection with the accompany
through. The pinions 33 mesh with racks 34 which are
ing drawings, in which:
slidable in grooves in the twister heads and which will
FIGURE 1 is a diagrammatic side elevation of appa
turn the pinions when the racks are moved longitudinally.
ratus embodying the invention;
FIGURE 2 is a partial elevation of the depressor roll;
As best seen in FIGURE 5, each rack carries a follower
roller 135 engageable with a stationary cam plate 36 ?xed
FIGURE 3 is an enlarged partial elevation of a portion
ly mounted adjacent to the conveyor so that the racks
will be moved lengthwise to operate the twister heads
of the depressor roller;
FIGURE 4 is a view of a twister head with one side
FIGURE 5 is a partial diagrammatic view showing the
twister head operating cam and rack;
FIGURE 6 is a partial side elevation showing the strip
ping mechanism;
vas the conveyor moves.
The paper sheet from either roll 22 or 23- is adapted
to be placed over a sheet of metal mesh fabric 10‘ which
is fed into the apparatus from any desired source be
neath the lower roll 23, as seen in FIGURE 1. The metal
mesh fabric is fed over a toothed feed roller 37 which is
FIGURE 7 is a partial elevation of a completed section
driven in synch-ronism with the depressor roller and con
of lathing formed on the machine of the invention; and
veyor and which is formed with spaced teeth to enter
FIGURE 8 is a section through the completed lathing.
the openings in the fabric and move it positively in syn
Referring ?rst to FIGURES 7 and 8, the completed
chronism with the paper. A depressor wheel 38 is prefer
lathing is formed by a metal mesh fabric, indicated gener 55 ably provided to force the fabric onto the projecting
ally at 10, which is preferably a hexagonal twisted fabric,
teeth on the drive roller 37 and to prevent the fabric from
including a plurality of parallel wires twisted together in
accidentally slipping from the drive roller.
pairs at twist points 11 and spread between the twist
The fabric is fed onto the conveyor 31 with the mesh
points to de?ne a hexagonal mesh. The fabric is reinforced
openings therein registering with the twister heads 32
periodically throughout its width by line wires 12 which
which also register with the slits in the paper backing
extend along the fabric and intertwisted with the mesh
sheet. The twister heads are so positioned that they will
de?ning wires at certain of the twist points 13. Fabric
of this type is well known in the art and requires no fur
ther description.
receive line wires 12 in the slots in the gears 3-3, as shown
in FIGURE 4, ready to intertwist the retaining wires there
The metal mesh fabric is secured over one face of a 65 with.
The retaining wires are ‘fed into the machine over the
backing sheet 14 formed of paper, or similar material,
and preferably untreated so that plaster will adhere to it.
The sheet 14 is formed at spaced points with slits ‘15 which
register with stretches of the line Wires 12 between adja
cent twist points 13. To secure the fabric to the backing
sheet 14, retainer wires or belly band wires 16 extend
along the opposite face of the sheet 14 in registration with
top of the depressor roller 29 and pass between the de
pressor roller and the paper backing sheet in registration
with the line wires 12 of the fabric.
As best seen in
FIGURES 2 and 3, the depressor roller 29‘ is formed
with spaced pins 39 the tips of which are slanted and
staggered successively in opposite directions and which
lie at circumferentially opposite sides of openings 41 in
the depressor roller which are spaced to receive the twister
heads 32. As the retaining wires 16 are fed overthe
for feeding over the surface of the roller a sheet of wire
mesh fabric and a sheet of paper formed with longitudi
nally extending slits therein registering with certain of the
depressor roller they will be engaged by the staggered tips
wires of the fabric and with the paper and fabric in over
of pins 39 and guided- thereby to the sides of the pins as
shown to be formed with offsets therein registering with
the openings 41 in the depressor roller. The retaining
wires will also enter the slots in the gears 33 of the twister
lying face-to-face relationship, means for feeding over the
surface of the roller a series of retaining wires on the
side of the paper opposite to the fabric and in alignment
with the slits in the paper, a series of twister heads
adapted to receive and twist together the retaining wires
heads above the line wires 12, as seen in FIGURE 4,
so that when the’ gears 33 are rotated by action of the 10' and those certain wires of the fabric, means mounting the
racks 34, the line wires and retaining wires will be twisted
together to form the twist points 17. The offsets formed
in the retainer Wires by the pins 39‘ not only provide slack
for the twisting operation, but also provide su?icient slack
twister heads for movement in a path adjacent to the
periphery of and synchronously with the roller to receive
the retaining wires and said certain of the wires of the
fabric and to project through the slits in the paper, the
in the‘ retainer wires to enable them to extend through 15 roller surface being formed with means to position the
wires in the twister heads, means on the roller to form
the slits in the backing sheet 14, as shown in FIGURE 8.
offsets in the retainer wires in registry with the slits in
The assembly of the backing sheet 14, the metal mesh
the paper sheet to provide slack for twisting with the
fabric 10 and the retainer wires 16 is stripped from the
fabric, means driving the roller and twister heads in timed
twister heads and ‘from the conveyor by stripping means
relation with each other, and means operated by move
best seen in FIGURE 6. As shown, the stripping means
ment of the mounting means in said path to strip the
comprise brackets 42 secured to the cross pieces of the
twisted wires from the twister heads.
conveyor 31 and having yokes 43 pivotally connected
2. The apparatus of claim 1 including means beyond
thereto. Each yoke, as shown, extends downward, strad
the stripping means to feed a second sheet of paper over
dling the brackets 42 and then upward to terminate in a
stripper point 44 lying adjacent to and normally below 25' the ?rst sheet and the retaining wires, means to supply
adhesive between the ?rst and second sheets to secure
the tip of each twister head. Each yoke 43 also carries a
them together, and means to press the sheets together to
cam plate 45 at its lower surface adapted to engage a ?xed
cam roller 46 carried by the conveyor framework so that
as the conveyor moves along, each cam plate will engage
cause them to adhere to each other.
the stripper point 44 beneath the assembly of backing
3. The apparatus of claim 1 including a second roller,
means to guide the assembled sheets and retaining wires
across the second roller with the retaining wires and paper
sheet and fabric and strip it from the conveyor and from
the twister heads.
sheet in contact therewith, means to feed a second sheet
of paper over the second roller, and spray devices to
The assembly, after ‘being stripped from the conveyor,
spray adhesive on the second sheet as it passes over the
second roller to secure it to the ?rst named sheet.
the cam roller 46 and tilt its yoke clockwise to elevate
passes between a guide and ‘feed rolls 47, as shown in
FIGURE 1, and then over a feed roller 48, at which
point the second backing sheet is applied. The fabric is
held against the feed roller 48 by a nib roll 4.‘)v which is
preferably covered with sponge rubber, or similar yield
ing material, to accommodate the metal mesh fabric.
4. Lathing forming apparatus comprising a roller, a
conveyor adjacent to the roller and movable in syn~
chronism therewith, means to drive the roller and con
veyor in tuned relation with each other, a series of twist
ing heads on the conveyor, means to ‘feed a wire mesh
fabric between the roller and conveyor so that the twist
The second backing sheets 18 are fed from supply rolls
ing heads will engage certain of the wires of the fabric,
51 supported on an upright frame 52 over the top of the
means to feed a sheet of paper over the roller to overlie
feed roll 48 from the discharge side thereof. As the
the fabric, means to feed a plurality of retaining wires
second backing sheet 18- passes over the feed roll 48,
adhesive is applied thereto by spray heads 53 which spray 45 over the roller to overlie the sheet of paper and to en
gage the twisting heads, the paper being longitudinally
a liquid adhesive onto the inner surface of the second
slit in registry with the twisting heads so that they can
backing sheet 18 which will engage the back of the ?rst
backing sheet 14 and the retainer wires. As the second
extend through the slits and twist the retaining wires with
backing sheet and the assembly of the ?rst backing sheet
the fabric, means on the roller to form offset bends in
metal mesh fabric and retainer wires pass between the
the retaining wires registering with the twisting heads to
rolls 4‘8 and 49, they will be pressed together, pressing
the adhesive on the second backing sheet 18 around the
retainer wires 16 and against the surface of the ?rst back
ing sheet 14 to secure the backing sheets ?rmly together.
provide slack for twisting with the fabric, and means
synchronized with movement of the conveyor to operate
the twisting heads.
'5. The apparatus of claim 4 in which the means on
The completed assembled lathing may pass from the ma 55 the roller for ‘forming offset bends in the retaining wires
chine, as shown at 53, to be rolled into rolls for ship
comprises staggered pins projecting from the roller.
ment or to be cut into sections, as desired.
It will be seen that the machine of the present invention
functions automatically and in a continuous and highly
efficient manner to produce paper backed metal mesh 60
lathing as long ‘as the necessary materials are supplied
thereto. It will be apparent that details of the construc
tion as illustrated can be modi?ed as desired and it is not
intended that the scope of the invention be limited to the
exact construction shown nor than otherwise by the term
of the appended claims.
What is claimed is:
l. Lathing forming apparatus comprising a roller, means
References Cited in the file of this patent
Bull ________________ .._ Mar. 4,
Loomis et a1 ___________ __ Nov. 9,
Bull ________________ __ Nov. 6,
Hall ________________ __ Mar. 31,
Gellman _____________ __. Apr. 25, 1933
Martin ______________ __ June 10, 1939
Brouse et al. __________ __ J an. 26, 1960
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