Improvements in and relating to Embossing Machines.
Year: 1891

page_text: Date of Application, 1st Oct., 1891
Complete Specification Left, 29th June, 1892-Accepted, 30th July, 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Embossing Machines.
I, ARCHIBALD MCLAURIN, of Cartside Works, Milliken Park, Renfrewshire,
Paper Embosser and Stainer, do hereby declare the nature of my invention to be
as follows:-
•
This invention has reference to and comprises a new or improved mode of, and
means or arrangement and combination of the parts of mechanism used in
embossing machines specially for the embossing of designs or letterpress matter on
sheets of paper, foil, or like fabrics, and which will effect this in a continuous and
expeditious manner, without requiring to intermittently reverse the motion of the
embossing rollers as is usual in this class of machines heretofore in use, and thus
save much time and labour and produce more work from each machine.
As applied to a paper embossing machine the improvements essentially consist in
making the upper steel roller with the design engraved on it, and the under paper
roller of the embossing machine, between which the sheets of paper are fed, to
rotate in a continuous manner towards each other in one direction and without
requiring to be reversed or brought back again after each traverse for embossing
the succeeding sheets of paper. This is effected by forming a longitudinal groove
or indentation in the surface of the under roller between the repeat of the last
pattern and the commencement of the new which will cause this roller to pause or
remain stationary at this position when not acted on and rotated by the stiff
friction of the surface of the upper roller, which would be driven by a band and
pulley or other gearing; and in fitting an adjustable pin or tappet on the end disc
or drnm of this under paper roller, at a point beyond the line of the groove, which
shall be acted on by a corresponding adjustable pin or tappet on the end of the
upper engraved roller, which rotates continuously in the same direction, and thus
start the under roller to bring the two surfaces into rolling contact again exactly
at the point where their embossing surfaces fit each other, to traverse and emboss
the sheets of paper fed through between them in succession in a nearly continuous
manner. The tappet on the under roller, or it may be the upper roller, would
preferably be made in the form of a groove or double toothed tappet with sufficient
clearance on the advance tooth for the groove to take into the single toothed
tappet of the other roller, and so ensure the exact registration of the two
embossing surfaces of the rollers by preventing the under roller which is driven by
the stiff friction of the upper roller, from over-running same.
Dated the 30th September 1891.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in and relating to Embossing Machines.
I, ARCHIBALD MCLAURIN, of Cartside Works, Milliken Park, Renfrewshire,
Paper Embosser and Stainer, do hereby declare the nature of my invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement in writing, that is to say :-
:-
'This invention has reference to and comprises a new or improved mode of, and
means or arrangement and combination of the parts of mechanism used in
embossing machines specially for the embossing of designs or letterpress matter
on sheets of paper, foil, or like fabrics, and which will effect this in a continuous
Price 81

page_text: and expeditious manner, without requiring to intermittently reverse the motion of
the embossing rollers as is usual in this class of machines heretofore in use, and
thus save much time and labour and produce more work from each machine.
And in order that my said invention and the manner of performing or carrying
the same into practice may be properly understood, I have herewith appended an
explanatory sheet of drawings in which Figure 1 represents a front longitudinal
"elevation of a paper embossing machine to which my improvements are shown
applied, and Figure 2 is an end elevation partly in section, with one of the
supporting standard frames removed. In these drawings A, A', are the two end
supporting vertical standard frames, secured together by the stay rods A". B, is
the upper steel roller on the surface of which the design is engraved. C is the
under paper covered roller, both of these rollers being carried in adjustable
bearings in the standard frames A, A'. The sheets of paper on which the design
is to be printed are fed in between these two rollers B, C, over the guide roller b.
A', A', are the screw spindles for adjusting the pressure of the upper engraving
roller B on the roller C. A shaft D, is carried in bearings in the standards A, A²,
and has fast and loose pulleys D", D', mounted on it, and receives motion by a
belt from any motive shaft of the works, aud transmits said motion through a
pinion at D' to the spur wheel B', mounted on the end spindle of the roller B.
Referring to these drawings:-The improvements essentially consist in making
the upper steel roller B with the design engraved on it, and the under paper
roller C, of the embossing machine, between which the sheets of paper are fed, to
rotate in a continuous manner towards each other in one direction as indicated by
the arrows in Figure 2, and without requiring to be reversed or brought back
again after each traverse for embossing the succeeding sheets of paper, as is the
case in machines heretofore in use. This is effected by forming a longitudinal
groove or indentation C¹, in the surface of the under roller C so as to cause this
roller to "pause" or remain stationary at this position when not acted on and
rotated by the stiff friction of the surface of the upper roller B driven from the
shaft D; and in fitting an adjustable pin or tappet in a groove in one end of
this under paper roller C, at a point beyond the line of the groove C¹, which shall
be acted on by a pin or tappet B³, secured on the end of the upper engraved
roller B, which rotates continuously in the same direction, and thus start the under
roller C, to bring the two surfaces into rolling contact again exactly at the point
where their embossing surfaces fit each other, to traverse and emboss the sheets of
paper fed through between them in succession in a nearly continuous manner. A
blade or other spring E is used to press on the projecting pin C², or other part of
the under roller C to maintain the latter steady while at its "panse or stationary
position, and thus prevent any overrunning due to the momentum of this roller and
consequent non-cessation of motion.
"
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 :-
:-
First. The herein described mode of making the engraved and paper rollers of
-embossing machines rotate always in the same direction with a pause at each
revolution of the paper roller substantially as and for the purposes set forth.
Second. As a means of carrying out the mode described in Claim 1 the forming
of a longitudinal recess in the paper roller and fitting projecting pins or equivalent
-organs on the engraved and paper rollers, substantially as herein described.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.