Improvements in Graining Mechanism.
Year: 1892

page_text: Date of Application, 3rd May, 1892-Accepted, 4th June, 1892
COMPLETE SPECIFICATION.
Improvements in Graining Mechanism.
I, JOSEPH MADDEN, of 179 South Main Street, Providence, in the County of
Providence, State of Rhode Island, United States of America, Painter, do hereby
declare the nature of my 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 of this
Specification
--
This invention has reference to improvements in devices by which painted surfaces
may be grained.
The object of this invention is to produce a device by which an outer layer or
coat of paint may be removed in part to represent the grain of natural wood.
The invention consists in the peculiar features of construction whereby an endless
belt carrying the graining design and a band covering said design are moved over
the painted surface to remove the upper undried coat of paint on the lines of the
design, as will be hereinafter more clearly specified and pointed out in the claims.
Figure 1 represents a longitudinal sectional view of my improved device.
Figure 2 represents a top view of the same a portion of the paint-removing band
being broken away to show the endless-belt and the graining design thereon.
Similar numbers of reference designate corresponding parts throughout.
In the drawings 5-5 indicate two side-arms of a frame, these arms have
longitudinal grooves cut in their outer surfaces and have the slots 6-6 cut through
the thickness of the metal of which they are formed; between the ends of these
arms is secured the roller 7 which is covered with rubber, or some similar yielding
material, and revolves on the shaft 8 the ends of which are fastened through the
arms 5-5.
The arms 9-9 of the frame are bent upward at their rear ends and have the
longitudinal-ribs 10-10 on their inner surfaces to engage in the longitudinal
grooves of the arms 5-5, and slots which correspond to the slots 6-6 of the
arms 5-5, said arms being secured together by the clamping-devices 11-11
working in said slots and which allow the extension of such frame.
At the points where the arms 9-9 of the frame are bent upward is secured the
roller 12 of similar construction to that marked 7 and journaled on the shaft 13 the
ends of which extend through the side arms of the frame and are fastened in a
suitable manner. The roller 14 is journaled on a shaft the ends of which are
secured in the side-frames and has the circular flanges 15-15 which bear against
the end surfaces of the roller 12 and is adapted to be driven by such contact when
the roller 12 is revolved.
The roller 16 is journaled on a shaft secured in the rear upper ends of the
arms 9-9, one end of the shaft carrying this roll 16 may be threaded to engage a
threaded perforation in one of the frame-arms, while the other end may have a
thumb-nut by which the shaft may be turned to unscrew the threaded end and thus
remove the shaft and roller when empty.
The frame thus formed is provided with the cross-handle 17 having the
extension 17', this handle is supported on four side-arms 18-18 which are pivoted
in pairs to the ends of the handle and are arched outward, their lower ends being
pivotally secured on the shafts 8 and 13, the pivoting of these arms allowing the
ends to be spread by the extension of the frame.
Over the rollers 7 and 12 is stretched an endless-belt 19 formed of any suitable
material and having a raised graining-design formed on its surface, and around the
rollers 16 is wound a strip 20 of cotton cloth, or other absorbent material, the loose

page_text: end of which is carried around the outer surface of the belt 19 and secured on the
roller 14.
When a surface is to be painted to represent the grain, of hard wood, a ground
coat of paint is, generally, first applied and allowed to dry, this ground coat is
then covered by the graining coat the removal of which in lines indicates the
natural grain. After the graining coat has been applied I pass my improved
graining-device over it in the proper direction,-as the rollers 7 and 12 are revolved
by pressure on the surface, the belt 19 will be carried along and those portions of
the band 20 covering the raised graining-design on said belt will be forced in
contact with the moist paint and will absorb the same, thus, bringing to view the
lower coat of paint at these points. As the roller 12 is revolved motion is imparted
to the roller 14 by means of the flanges 15 and this roller will take up the band 20,
the surface carrying the paint being wound inside, it not being necessary to take up
this band quite as fast as it is unwound from the roller 16.
By the use of shorter rollers and shafts for carrying the same the device may be
narrowed considerably to adapt the same for narrower belts, for use on small
panels, the rollers and especially that marked 7 can also be made smaller in
diameter to permit its entrance into corners.
The frame is made extensible in order that belts of different lengths may be
placed over the rollers 7 and 12 and that these belts may be tightly stretched.
When desired the device can be used for applying designs to surfaces by omitting
the absorbent-belt 20, in this case the paint should be applied to the raised surface
of the pattern formed on the belt 19, the device would then be passed over the
surface to be ornamented to which a portion of the paint carried on the belt 19
would adhere.
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 :-
Claim 1. In a graining-machine, the combination with an endless-belt, having a
raised graining-design, carried on rollers revolving on shafts secured in an
extensible frame, of a band of absorbent material interposed between the graining
design and the surface to be grained, as and for the purpose described.
2. The combination with the rollers 7 and 12 journaled on shafts secured in the
frame formed by the arms 5-5 and 9-9 and carrying the endless-belt 19 having a
raised graining design thereon, of the rollers 14 and 16 journaled on shafts secured
in the arms 9-9, and the band 19, of absorbent material, adapted to be operated
by the flanges 15 secured to the end portions of the roller 14 and bearing against
the roller 12, as and for the purpose described.
3. In a graining or ornamenting machine, the combination with an expansible
frame and rollers journaled in the ends of the same, of an endless-belt carried by
said rollers and having a raised design formed thereon, for the purpose described.
Dated this Eighth day of March A.D. 1892.
In presence of:-
:-
JOSEPH MADDEN.
JOSEPH A. MILLER, Jr.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.