A Patent Model

by Lori Eggleston. 0 Comments

     It’s about time to find something interesting from the collection room again!

     Let’s take a look at a patent model of a mattress.  Due to the large number of sick and wounded soldiers in the Civil War, demand for hospital beds and mattresses increased.  Usually where there is demand, there are people willing to produce the supplies for it, and this leads us to today’s artifact.

     At the time of the Civil War, applications for patents were required to be accompanied by a sample, usually a small working model, of the item.  Over time this became problematic for the government, as all the patent models submitted to them took up a lot of storage space!  The requirement for these models was eventually dropped.  Now, though, these patent models are in demand as collectibles.

This is the patent model submitted by A.C. Crondal.  It measures just 11 ½ inches long and 5 inches high.  Notice that the original patent office label is still attached to it which indicates that Mr. Crondal’s patent was granted on September 22, 1863 and was patent number 40,024.


     Also notice in the photograph above that the patent office label is attached to the model with a piece of red ribbon, also referred to as tape.  This tape is the origin of the of the expression “red tape” which is often associated with government bureaucracy!

     A letter was also a required part of the patent application.  The one for this mattress sample starts:

"Be it known that I, A.C. Crondal, of the city, county, and State of New York have invented a new and Improved Cork Stuffing for Mattresses, Pillows, &c.; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompany drawings, forming a part of this specification...."

          He proceeds to describe the methods he used to grind and sift the cork granules, the manner in which the linseed oil was applied to the granules, and how these granules could be used. 

“For mattresses and similar articles - such as the seats and backs of sofas, chairs, &c. - I use the coarse   granules, and the fine granules I apply for stuffing pillows and all classes of soft cushions."

The bottle contains a sample of the oiled cork stuffing Mr. Crondal wanted to patent, and was submitted to the patent office along with the model of the mattress. 


     He then goes on to describe why his invention would be good for use in hospitals and ambulances:

"By these means I have succeeded to render the use of cork; practicable for stuffing mattresses, &c., being without doubt the healthiest material for upholstering, because it does not attract or absorb moisture, it does not suffer vermin, and it is cool and elastic.  A mattress stuffed with cork, according to my method, therefore is of the greatest advantage for patients in hospitals and ambulances, and for sick persons in general, and there is no danger of the destruction of the cellular texture of the skin or mortification usually arising from the secretions passing into the mattress and rendering the same moist, hard, and uneven.  The cork prepared according to my invention remains dry and even, and patients lying on one of my mattresses have never to be moved out of bed.

By reason of its lightness, cheapness, and portability my mattress is also of great advantage on board of vessels, and in this case it may serve at the same time as a life preserver."

     The following year, Mr. Crondal applied for a patent of a folding bedstead, which can be seen here:  www.google.com/patents/US41488.  I suspect that he intended for his mattresses to be used on these beds!


Photos courtesy of the National Museum of Civil War Medicine.

My entire blog can be viewed at www.guardianoftheartifacts.blogspot.com.


Leave a Reply