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Патент USA US2108155

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Feb, 35, 1938.
Filed March 1, 1937
5 Sheets-Sheet l
7705/ ?Woofe/vs.
Feb. 1%,‘ 1938.
210M155 ‘
Filed March 1, 1957
s Sheets-Sheet‘ 2
71703; E ?/oalens,
Feb, 15, m8, '
Filed Mar‘ch 1, 1957
s Sheets-Sheet 5
Fey .13.: WaoZe/Ys.
Patented Feb. 15, 1938
e351: 7
Roy E. Woolens, Detroit, Mich, assignor to
Parker-Wolverine Company, Detroit, Mich., a
' corporation of Michigan
Application March 1, 1937, Serial No. 128,475
7 Claims. (Cl. 101—35)
This invention relates to wood graining appa
ratus. More particularly it relates to a novel
form of wood graining machine primarily de
signed to rapidly and efficiently reproduce a sim
5 ulation of wood grain upon the curved surface
of a molding or other similar article.
As is well recognized, the reproduction of wood
grain upon sheet metal or other similar articles
has long been practiced. It has heretofore been
10 conventional in the reproduction of wood grain
upon articles having arcuately curved or irreg
ular surfaces, to apply the wood graining ink
thereto by means of a soft resilient transfer roll
usually formed of gelatin or similar composition.
15 While the rolls most commonly utilized for the
purpose of transferring‘ an imitation wood
grained surface decoration-to an article are suf
ficiently resilient so that a certain amount of
surface irregularity may be tolerated, it has been
found that the elasticity of the gelatinous rolls
now available is insu?icient to cover the entire
surface of a molding or a similar article which
has an extremely sharply curved arcuate surface.
It is a primary object, therefore, to provide a
25 mechanism which will reproduce an imitation of
wood grain upon the curved surface of a molding
in a single operation thus limiting the number of
hand operations which must necessarily be per
formed and doing away to some substantial ex
30 tent with the touch-up operations heretofore re
The present invention contemplates the pro
vision of a pair of wood graining units arranged
upon axes at right angles to‘ each other. Each
35 of the wood graining units includes a soft re
silient gelatinous transfer roll adapted.- to engage
the surface of a molding to be ?nished. Means
are utilized for driving the rolls in synchronism
in order that each will apply a certain predeter
40 mined portion of wood graining to the surface
of the article under treatment. The wood grain
designs used upon‘the hard metal electrotype
rolls which are utilized for transferring the ink
to the gelatinous rolls are likewise synchronized
45 in order that the grained surface area applied
by one roll will accurately match the grained
surface applied by the other roll thus virtually
eliminating any line of demarcation between the
particular zone woodgrained by one unit and the
50 zone of surface woodgrained by the other unit.
The invention still further contemplates means
for accurately adjusting the relative positions of
‘the respective wood graining units without al
tering the synchronized operation thereof in or
der that the zone to which woodgraining is ap
plied by one of the units may be accurately con
trolled to mate accurately with the zone to which
wood graining is applied by the other of said
units. The invention further contemplates the
provision of novel mechanism for urging the ar- 5
ticle to be ?nished into engagement with the re-‘
spective rolls in order that an accurate mating
of the zones upon which the woodgraining is
- produced may be obtained.
The present invention contemplates the pro 10
vision of an idle roll adapted to guide and sup
port the molding to which the graining is to be
applied and a, control pedal is utilized for the
purpose of accurately controlling the position of
this feed roll in order that the extent to which
the molding may be urged into engagement with
one of the gelatinous rolls may conveniently and
accurately be controlled.
The invention still further contemplates the‘
provision of a construction primarily adapted 20
for woodgraining. moldings which construction
embodies two separate wood graining units which
wood graining units are operated in synchro
nism and still further contemplates the provision
of accurate and easily controlled means for ad
justing the position of one of the units with re
spect to the other without in any way disturbing
the synchronous operation thereof.
Many other and further objects, advantage
and features of the present invention will be
come clearly apparent from the following speci
?cation when considered in connection with the
accompanying drawings forming a part thereof.
In the drawings:
Figure 1 is a side elevational view with parts 35
in section and parts broken away illustrating one
embodiment of the apparatus.
Fig. 2 is a top plan view on a reduced scale of
the work table surface illustrating in general the
configuration thereof.
Fig. 3 is an enlarged fragmentary side eleva
tion view with parts in section and parts broken
away showing the two associated and synchro
nized wood graining units and illustrating the
means by which these units are simultaneously
Fig. 4 is an enlarged fragmentary sectional
view taken substantially on the line 4--4 of Fig.
3 illustrating in further detail the relative po
sitions of the separate wood graining units and
the manner in which the same are mounted and
Fig. 5 is a fragmentary perspective view of one
form of molding which may conveniently be
wood grained by the apparatus of the present in
to support a housing member 40 containing the
second wood graining unit. This housing mem
ber 40 has a shaft 4| journalled therein which
The speci?c embodiment of the invention illus
trated in the drawings includes generally a sup
porting table or framework I 0y which may con
veniently be formed from any suitable construc
tion to provide a rigid support for the apparatus
as a whole.
for a shaft 45 on which is" mounted a wood grain
This table or framework ID has
bearings which serve to provide a pivotal mount
ing H for tabletop I2 in order that this tabletop
as a whole may be bodily swung to the desired
inclination depending upon the particular type
of molding to which the wood graining is to be
applied, as will be more clearly understood here
The adjustment of the inclination of
this tabletop may play a very important part in
15 inafter.
the adaptation of the apparatus herein described
to moldings of a substantially varying form and
surface curvature.
The body portion of the table II! serves to pro
vide a vrigid support for a housing l5 which may
conveniently be formed of a casting of unitary
integral structure, if desired. This housing I5 is
provided with two pairs of respectively axially
shaft serves to carry a gelatinous transfer roll 42
similar in construction to the gelatinous transfer
roll 36 described above.
The housing 49‘a1so serves to provide bearings
ing cylinder 46 similar in construction to the
wood graining cylinder l9 described above. Suit 10
able gears 49 and 50 may be keyed to the shafts
45 and 4], respectively, in order to insure that
the rolls 46 and 42 will be driven synchronously.
The shaft 45 extends through the wall of the
housing 40 and is provided at its outer end with 15
a sprocket wheel 52 which is connected by means
of a suitable sprocket chain 53 with a sprocket
wheel 54 keyed to the end of the stub shaft 29.
Inasmuch as has been explained above, the stub
shaft 29 is driven by the drive shaft l8 which 20
serves to drive the ?rst wood graining cylinder
l9, it will be apparent that the second wood
drive shaft carries a bevel gear 26 which meshes
graining cylinder 46 is likewise synchronously
operatedwith the ?rst mentioned wood graining
cylinder. Consequently, it will be readily appre 25
ciated that the gelatinous transfer rolls 36 and
42 will likewise be driven in synchronism. Inas
much as the housing 40 is supported for pivotal
movement about the shaft 29, it will be readily
appreciated that this housing may be pivotally 30
moved about the axis of this: shaft without in any
way disturbing the synchronous drive through the
sprocket chain 53. Consequently, the relative
vertical position of the transversely extending
gelatinous transfer roll,may be accurately regu
lated without materially interfering with the syn
with a bevel gear 28 serving to drive a short stub
chronous operation thereof with respect to the
aligned bearings l6 and H, respectively.
bearings l6 serve to provide a mounting for a
drive shaft l8 and the drive shaft 18 carries an
etched metal wood graining roll l9 locked there
to in driving relation, between the bearings l6.
30 The lower end of the drive shaft 18 has a bevel
pinion 20 secured thereto which through a bevel
gear 2|. connects the ,drive shaft in driving rela
tion with a shaft 22 driven by a suitable electric
motor 23 which motor may be conveniently
mounted on the table it]. The upper end of the
shaft 29 which is journalled for rotation in a
suitable support member 39 rigidly connected to
40 the upper portion of the housing l5. The use
and function of this apparatus will be more
clearly understood from the following descrip
gelatinous transfer roll 36.
The housing 40 has an operating link 60 pivot
ally connected thereto at the point 6| which op 40
erating link has its lower end pivotally connected
to a ?tting 64 slidably mounted on a vertically
A shaft 35 is journalled for rotation in the
extending operating rod 65. The operating rod
bearings I1 and has secured thereto a gelatinous
transfer roll 36 which frictionally engages the
spring pressed foot pedal 66 which is preferably 45
surface of the roll l9. The roll I9 may have the
pression coil spring 61. A suitable resilient lost
motion connection between the actuating rod 65
and the ?ttingv 64 is provided by means of com
pression coil springs 61 surrounding the shaft 65 50
surface thereof engraved or etched in the manner
in which photogravure plates are produced in
50 order that ‘a plurality of relatively minute re
cesses will be formed therein which recesses
65 is pivotally connected at its lower end to a
constantly urged upwardly by means of a com
on either side, of the ?tting 64. , The lower end
serve‘to retain ink applied to this roll by suitable
of the lower compression coil spring 61 may abut
conventional means such as are commonly used
against a projection 68 formed integrally with
the housing l5 and the upper end of the upper
compressionv coil spring 61 may be con?ned by a
in this general art.
A scraper or doctor blade
55 (not shown) is mounted in the housing l5 and
has the edge thereof in engagement with the roll
I9 in order to scrape: the surplus ink therefrom
before this roll comes into contact with the gelat
inous transfer roll 36. As is well understood in
60 apparatus of this general character, the transfer
roll 36 will serve to remove the minute bodies of
ink from the surface of the etched roll l9 and
carry this ink to apply the same to the article
upon which it is desired to produce the wood
65 grain. The gelatinous transfer roll, as is con
ventional in the art, likewise has a doctor blade
(not shown) associated therewith which serves
to maintain the surface of the roll clean for the
pair of lock nuts 10 threada ly secured on the
end of the operating rod 65.
~From the foregoing, it will be readily appre
ciated that as the foot pedal 66 is depressed, the
?tting 64 will be resiliently moved downwardly 60
carrying with it the link 60.
Inasmuch as the
link 60' is pivotally connected to the housing 49,
it will be readily understood that the housing
40 will be bodily swung about the axis of the stub
shaft 29 and moved downwardly toward the 65
Work as will hereinafter be explained in detail.
A work feeding roll ‘H is journalled for free
_ reception of ink from'the etched roll I9.
The support member 30 has an upstanding
rotation upon a pin 12 which pin is carried by a
slide 13 mounted for transverse reciprocatory
projection 3| formed integrally thereon, which
movement in‘ a guideway 14 rigidly supported by
projection has an aperture therethrough which
serves not only-to provide a bearing for the stub
main frame ‘Ill. The slide 13 has its lower sur—
face, recessed to receive one arm of a bell crank
shaft 29 but serves the purpose of providing a
pivotal‘ mounting for a casting 39 which serves
75 which bell crank ispivotally mounted upon
the main frame ID at the point 16. The-lower
end of the bell crank arm 75 is pivotally con
nected to the ?tting 64. Consequently, it will be
seen that upon downward movement of the op
erating-shaft 65, the idle fed roll ‘H will be moved
forwardly toward the peripheral surface of the
gelatinous transfer roll 36 and, as has been ex
plained above, downward movement of the actu
ating rod 65 likewise serves to move the housing
40 downwardly consequently, bringing the gel
10 atinous transfer roll 42 into engagement with
work carried by the idle roll 7!.
It will be noted that the horizontal axis of the
wood graining unit has the etched metal roll
thereof, which is mounted on the shaft 45, posi
15 tioned in a bearing block 86, the position of
which may conveniently be adjusted by means
of the adjusting screw 8!. The opposite end
of the shaft 45 may be conveniently positioned
by means of an adjustable yoke or arm 82 se
20 cured to the housing 40 by means of a bolt 83.
Consequently, it will be appreciated that by ad
justing the screw 8| and the yoke 82, the work
ing pressure between the etched roll 46 and the
gelatinous roll 42 may be accurately regulated.
25 It will be appreciated that this adjustment need
be effected only through an extremely narrow
range and consequently the intermeshing of the
gears 49 and 50 is not materially affected there
by. It will likewise be appreciated that a similar
construction may be employed in connection with
the etched roll it and gelatinous roll 36 if de
sired. Such adjustments have been found de
sirable in some instances because in order to get
a satisfactory reproduction, the working pres
35 sure between the etched roll and the gelatinous
roll has in particular installations been found
extremely important.
From the foregoing description, it will be read
ily apparent that a curved surface molding 99 may
40 rapidly and conveniently be wood grained by‘
means of the machine of the present invention.
In order to reproduce wood grained images upon
the molding 90, the table I2 is ?rst adjusted to
a position such that it serves to support the base
portion of the molding to which it is desired to
apply the wood grain.
The wheel 'H has a pe
ripheral con?guration adapted to smoothly en
gage the rear side of the molding 90 in order to
feed the same into contact with the rolls. The
apparatus as a whole is preferably driven con
tinuously and the molding 9!] may be placed upon
the feed roll ‘H and it will be understood that
when the pedal 66 is in upward position, the
molding mounted on the feed roll will be in a
55 position out of contact with the both of the rolls
42 and 36. The pedal 66 may then be depressed
which movement will through the spring Bl
transmit downward force to the ?tting 64 which
downward force will be somewhat cushioned due
60 to the lost motion connection provided by the
springs 61. As the ?tting $4 is moved down
wardly, it will simultaneously e?fect downward
movement of the entire housing 48 bringing the
gelatinous transfer roll 42 into contact with a
65 portion of the upper curved surface of the mold
ing 90 and at the same time will, through the
bell crank arm 75, serve to move the feed roller
‘H upwardly to bring the face portion of the
molding into contact with the gelatinous roll 35.
It will be clear that as the pressure upon the
pedal 66 is increased, the housing 40 will be
moved downwardly thus deforming the surface
of the gelatinous roll 42 to cover a substantial
area of the curved surface of the molding. The
75 pressure on the foot pedal 66 may be maintained
in 'such'a manner that the zone to which wood
graining is applied by the roll 36 will mate with
the zone to which wood graining is applied by
means of the roll 42. Inasmuch'as the pressure
on the foot pedal may be very accurately con
trolled, the molding 90 may have wood graining
applied thereto in a single continuous operation
without any overlapping or space between the
zones acted upon by the transfer rolls.
It has been found that these zones can be 10
mated sufliciently accurately in practice so that
wood grain of one zone will constitute a Virtual
continuation of the pattern formed by the wood
grain of the other zone. In order to obtain best
results, it has been found desirable to utilize 15
matched wood grain rollers whereby the pattern
formed by one roll will mate clearly with the
pattern formed by the other and constitute a sub
stantial continuation. thereof thus virtually ob
literating any line of demarcation between the 20
respective zones.
It will be readily appreciated that although but
one speci?c embodiment of the invention has been
illustrated and described herein, many other and
various modi?cations thereof falling within the 25
scope of the invention as de?ned in the sub
joined claims will become clearly apparent to
those skilled in the art.
I claim:
1. In a machine for wood graining molding, a v30
pair of transfer rolls, means for supporting a
molding to be grained with respect to said rolls,
and means for effecting movement of one of said
rolls and said supporting means to bring said rolls
simultaneously into engagement therewith.
2. In a wood graining machine, means for sup
porting a molding to be wood grained, a pair of
transfer rolls for applying wood graining thereto,
one of said transfer rolls adapted to apply wood
graining to a portion of the surface of said mold 4.0
ing, the other roll serving to apply wood graining
to an adjacent portion of the surface thereof,
means ‘for urging one of said rolls into engage
ment with the work, means for moving the work
into engagement with the other of said rolls and 45
means for driving said rolls in synchronism.
3. In a machine for wood graining moldings
having curved surfaces, a pair of wood graining
units each including a metallic wood graining roll
and a resilient transfer roll, means for mounting
one of said units for pivotal movement with re
spect to the other, and means for‘ driving said
units in synchronism.
4. In a machine for wood graining moldings, a
pair of wood graining units each comprising a
metallic wood graining roll and a resilient trans
fer roll, an idle roller adapted to support a mold
ing to be wood grained, means for moving said
idle roller toward one of said transfer rolls, and
simultaneously actuated means. for moving the
other transfer roll toward said idle roll.
5. Apparatus for applying wood graining to
moldings including in combination a pair of wood
graining units each including an etched metal
wood graining roll and a resilient transfer roll, 65
the axes of the rolls of one unit being substan
tially inclined to the axes of the rolls of the other
unit, one of said units being operated for pivotal
movement with respect to the other and a motor
serving to drive all of said rolls in synchronism. 70
6. Printing apparatus including a pair of trans
fer rolls, one of said rolls being bodily movable
with respect to the other, a work supporting
member movable to force an article to be printed
into engagement with one of said transfer rolls 75
and means for moving the other of said transfer
rolls into engagement with the article to be
supporting member, means for actuating said
member to force work carried thereby into en
gagement with one of said rolls into engagement
with the article to be printed and a member for
7. Printing apparatus including a pair of trans
fer rolls, one of said rolls being bodily movable
with respect to the other, means for driving said
rolls in synchronism, a movably mounted work
simultaneously actuating said two last mentioned 5
means .
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