Skip to main content


See other formats






Specification of Letters Patent No. 341, dated August 8, 1837. 


To oil whom it may concern: 

Be it known that I, B. Morison, of Mil 
ton. in the count}' of Northumberland and 
State of Pennsylvania, have invented a new 
and useful Improvement in Machines for 
Spreading Adhesive or other Plasters Upon 
Muslin, Linen, or other Suitable Kinds of 

The nature of my invention consists in the 
application of a roller to a spreader, in such 
a manner, as that the cloth, on which the 
plaster is to be spread, may be kept at a 
proper distance from the spreader, and at 
the same time, be carried by means of the 
1 5 roller, along the bottom of the spreader con- 
taining the melted plaster, in such a manner 
as to cause the piaster to be regularly and 
smoothly spread upon only one side of the 
cloth, as it is moved along the bottom of the 
20 spreader upon the roller. 

To enable others, skilled in the art, to 
make and use my invention, I will proceed 
to describe its construction and operation. 
A frame is made, say about eighteen 
25 inches square from the inside, out of metal 
or solid wood, having four legs so as to 
stand about the height of a common table. 
In this frame, two rollers are placed par- 
allel to each other, moving truly in eyes or 
30 holes, made in two opposite sides of the 
frame, by means of a gugdeon which pro- 
jects from each end of each roller. On one 
end of each roller, a crank is attached to 
the gudgeon for the purpose of turning the 
rollers. The main roller is about five or six 
inches in diameter, and should be made of 
cast iron or brass, and turned perfectly true 
and smooth, and also so as to revolve per- 
fectly true upon its gudgeons or axis. The 
smaller roller is about three inches in di- 
ameter, made of wood and turned so as to 
revolve perfectly true. The smaller roller 
is placed in the frame with its lower edge on 
a line with the lower edge of the larger 
roller, leaving between the two, a space of 
about an inch in width. The gudgeons of 
each roller are made to fill the eyes or holes 
in which they revolve, so that they may run 
easily and yet without any variation. On 
the top of the frame, at each end of the 
larger roller, a metallic plate is secured so 
that their upper surfaces are on a line with 
the upper side of the roller. In each plate, 
a thumb screw works perpendicularly, hav- 





ing a shoulder on each if or the purpose of 55 
holding the spreader down firmly to its 
proper place directly over the top of the 
roller. The spreader is made of cast iron 
or brass, and in the form of a triangular 
trough, having an opening along the bottom 60 
of about an half inch width and about three 
or four inches shorter than the roller, and 
having projections at each end of the trough,, 
through holes, in which,, the thumb screws, 
pass in such a manner as that the spreader 65 
may be screwed down upon the larger roller. 
The two lower edges of the sides forming' 
the trough, as also the bottom of each pro- 
jection, are made smooth, and on a perfectly 
true line, so that when screwed down upon 70 
the plates, the larger roller may be touched 
thereby, along every part of the same, as 
the roller is . turned upon its gudgeons. The 
width or thickness of the edges of the 
spreader, at the parts which touch the sur- 75 
face of the roller, is about the sixteenth of 
on inch, or less; but, immediately from the 
edges, the thickness of. the sides continues 
to increase at an angle of about ninety de- 
grees, until about half an inch thick, which 80 
is sufficient to make the spreader retain heat 
and at the same time give sufficient strength 
to prevent the sides from bending while 
spreading the plaster. The smaller roller is 
for the purpose of winding the cloth upon, 85 
previously to spreading the plaster thereon, 
and is capable of being made to run tightly 
or freely, by means of a cork at each end, 
which is -pressed down, or raised from the 
gudgeons of the same, by means of a thumb- 90 
screw which works in the frame at each end 
of the roller — the corks are let into the 
frame from the inside, so that, the shoulders 
of the roller prevent them from falling out. 

In order to use the machine for the pur- 95 
pose intended, one end of the cloth is se- 
cured to the smaller roller (by means of 
tacks, or otherwise) and then wound tightly 
and smoothly thereon, (by turning toward 
the larger roller;) the other end of the cloth 100 
is then passed over the top of the larger 
roller and around the same to the bottom 
thereof, so that the cloth may embrace about 
three-fourths of the surface of the larger 
roller. The spreader is now made sum- 105 
ciently warm to keep the plaster in a semi- 
liquid state, and then put to its place upon 
the larger roller. A small bit of paper is 


now put under each end of the spreader so 
as to rest upon the plates, just the thickness 
that the plaster cloth is to be when finished, 
and the spreader screwed down firmly upon 
5 them. The plaster being melted to the con- 
sistency of common molasses, is now poured 
into the trough of the spreader — one person 
now takes hold of the loose end of the cloth, 
and drawing toward the smaller roller so as 

10 to keep the cloth tight and smooth against 
the larger roller, walks backward, as a sec- 
ond person, by turning the larger roller, 
draws the cloth from the smaller, between 
the spreader and the larger roller, and thus 

15 finishes. The smaller roller must be 
corked down sufficiently to keep the cloth 
stretched smooth, while the plaster is being 
spread thereon; and the cloth should be a 
little wider than the length of the opening 

20 in the bottom of the spreader, so that a 
margin of the cloth may be left unspread, on 
each side, in order to prevent the plaster 
from sticking to the roller at each end. 

What I claim as my invention, and desire 
to secure by Letters Patent, is — 25 

The application of a roller to a spreader, 
as herein described, so that the muslin, 
linen or other cloth, on which adhesive or 
other plaster is to be spread, may be kept at 
such a distance from the spreader and at the 30 
same time be carried by means of the roller 
along the bottom of the spreader (while 
containing the melted plaster) as to cause 
the plaster to be uniformly and smoothly 
spread upon only one side of the cloth as it 35 
is moved along across the bottom of the 
spreader upon the roller, or between the 
roller and spreader, as herein described; 
using in the construction any kind of mate- 
rial that will be suitable to the purpose in- 40 


Witnesses : 

Jos. Bound, 

John F. Wolfinger.