Improved Elastic Filling Padding or Cushioning Material and Method of Manufacturing the same."
Year: 1897

page_text: Date of Application, 7th Oct., 1897-Accepted, 18th Dec., 1897
66 Improved Elastic Filling Padding or Cushioning Material and
Method of Manufacturing the same."
I, JULIUS DEBORDE Merchant of Hallesches Ufer 9, Berlin S.W. in the Empire
of Germany, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in
and by the following statement: -
This invention relates to a process for manufacturing elastic filling padding
or cushioning material in which gelatine, glue and the like are used.
It has been found that such clastic filling or padding hitherto prepared has the
drawback of being softened by the heat of the sun.
The applicant has discovered that formaldehyde which he originally added
as an experiment to prevent the mass from decomposition possesses the property
of preventing the material from becoming softened or liquidified by heat.
Experiments have shown that an addition of formaldehyde raises the resistance
of the mass to liquifaction by heat to such an extent that the mass does not
melt even when placed directly over a fire, but, in that case becomes carbonized.
The process is carried out as follows;-
A mixture of about 125 parts gelatine and 125 parts glycerine is heated
for about 10 to 15 minutes in a steam bath. The mixture is then preferably
converted into lather or froth and one part of formaldehyde is added to it, and
the whole again strongly heated, whereupon it is filled into moulds or tubes or
used in any other manner for manufacturing cushions, saddles tyres or the like.
Care must be taken that after the addition of formaldehyde, the mass be
heated to at least 150° C for if insufficient heat be used the formaldehyde does not
act in the desired manner. It is also important to employ the formaldehyde in
substantially the proportions stated. An excessive amoMht of formaldehyde
renders the mass brittle so that it does not possess then sufficient elasticity and
cohesion, which are most important qualities of a mass to be used for cushioning
or like purposes. If too little formaldehyde be used the desired effect (the non-
softening of the mass) is not attained.
The addition of formaldehyde also prevents the mass from becoming decom-
posed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is;
1. A process for manufacturing elastic filling padding or cushioning material
for cycle tyres saddle cushions and cushioning material generally from gelatinous
substances consisting in adding a small percentage of formaldehyde to a gela-
tinous mixture (say one part of formaldehyde to 250 parts of a mixture of
gelatine and glycerine) substantially as described.
2. The method of manufacturing elastic filling or padding or cushioning
material consisting in adding one part of formaldehyde to about 250 parts of a

page_text: mixture of glue gelatne and glycerine or the like and then in strongly heating
the mass to about 150°C then pouring the mass into moulds tubes or the like
to give it the desired form substantially as described.
3. A composition for the purpose specified consisting substantially of 125
parts of gelatine 125 parts of glycerine and one part of formaldehyde.
Dated this 7th day of October 1897
BOULT & WADE,
Agents for the Applicant.