Wilson Mechanical Instrument Co., Inc.
Wilson Mechanical Instrument Co., Inc.
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Product Details
CompanyWilson Mechanical Instrument Co., Inc.
Certificate Type
Capital Stock
Date Issued
May 10, 1944
Canceled
Yes
Printer
Broun-Green Co.
Signatures
Hand signed
Approximate Size
12 1/4" (w) by 8 3/4" (h)
Images
Show the exact certificate you will receive
Guaranteed Authentic
Yes
Additional Details
NA
Historical Context
Hugh M. Rockwell (1890–1957) and Stanley P. Rockwell (1886–1940) from Connecticut co-invented the "Rockwell hardness tester," a differential-depth machine. They applied for a patent on July 15, 1914. The requirement for this tester was to quickly determine the effects of heat treatment on steel bearing races. The application was subsequently approved on February 11, 1919, and was assigned U.S. Patent 1,294,171. At the time of invention, both Hugh and Stanley Rockwell worked for the New Departure Manufacturing Co. of Bristol, Connecticut. New Departure was a major ball bearing manufacturer which in 1916 became part of United Motors and, shortly thereafter, General Motors Corporation.
After leaving the Connecticut company, Stanley Rockwell, then in Syracuse, New York, applied for an improvement to the original invention on September 11, 1919, which was approved on November 18, 1924. The new tester was given U.S. Patent 1,516,207.
Rockwell moved to West Hartford, Connecticut, and made an additional improvement in 1921. Stanley collaborated with instrument manufacturer Charles H. Wilson of the Wilson-Mauelen Company in 1920 to commercialize his invention and develop standardized testing machines. The company, which would be renamed the Wilson Mechanical Instrument Company, and based in New York City, developed the superficial Rockwell hardness tester in 1932 for measuring the hardness of sheet metal, brittle materials, and other specimens not suitable for the original higher-load test.
The company was later purchased by the American Chain and Cable Company, the first of many ownership changes over the year.
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Additional Information
Certificates carry no value on any of today's financial indexes and no transfer of ownership is implied. All items offered are collectible in nature only. So, you can frame them, but you can't cash them in!
All of our pieces are original - we do not sell reproductions. If you ever find out that one of our pieces is not authentic, you may return it for a full refund of the purchase price and any associated shipping charges.
FAQ
Are the certificates offered on your site genuine or reproductions?
All of the certificates you see on our site are genuine pieces, we do not sell any reproductions.Are the certificates you sell negotiable on any of today's stock markets or indexes?
No. All of the pieces we sell are either canceled or obsolete and have collectible value only.
Are the images presented in your product listings of the exact piece I will receive?
It depends. We try to present images of the exact piece you will receive whenever possible. However, when we are offering quantities of a piece, this is impossible. Within every product page we detail whether or not you will be receiving the exact certificate listed, or if the image is a representative example of the one you will receive.
How will you ship my order and how much do you charge?
We ship all orders via the United States Postal Service. Most domestic orders are shipped via Ground Advantage. USPS International, Priority and Express Mail, UPS and DHL services are also available, and costs are calculated during checkout. Current charges may be reviewed here.
Can I return my purchase?
Absolutely. You may return any merchandise, for any reason, within 30 days of the purchase date for a full refund of the purchase price.
We guarantee all of our pieces to be authentic. If you ever determine that a piece is not authentic, it may be returned for a full refund of the purchase price as well as any associated shipping charges.
Shipping
If your order exceeds $35, and the shipping address is within the United States, shipping via USPS Ground Advantage is FREE!
We make every effort to ship out all orders within 24 hours of receipt.
We ship the majority of orders via the USPS, with domestic orders using the Ground Advantage service.
Shipping is calculated during checkout. Upgraded services such as Priority and Express Mail, as well as UPS and DHL options, are also available.
As soon as your order is shipped you will receive your tracking information via email.
OVERSEAS ORDERS PLEASE NOTE THAT WE DECLARE FULL ORDER VALUE ON ALL SHIPMENTS. CUSTOMER IS RESPONSIBLE FOR ALL VAT/CUSTOMS CHARGES.
Returns
Our goal is to make sure every item you receive is exactly what you had in mind. If you not happy with your purchase, we’ll help you get it sorted in a timely and professional manner.
You can return anything we offer for an exchange, refund or store credit within 30 days of delivery. Return shipping costs may apply, and the item must be in its original condition and packaging.
Any shipping charges collected on the original order are not eligible for a refund.