Ontario's Historical Plaques 

Discover Ontario's history as told through its plaques

2004 - Now in our 15th Year - 2019

 To find out all about me, you can visit the Home Page 

Looking at this page on a smartphone?
For best viewing, hold your phone
in Landscape mode (Horizontal)

The P.L. Robertson Manufacturing Company

The P.L. Robertson Manufacturing Company

Photo by Alan L Brown - Posted December, 2010

The P.L. Robertson Manufacturing Company

Photo by contributor Wayne Adam - Posted November, 2011

The P.L. Robertson Manufacturing Company

Photo by Alan L Brown - Posted December, 2010

Plaque Location

The Region of Halton
The Town of Milton
Next to Bronte Pioneer Cemetery
on the east side of Bronte Street North
between Main Street East and the railroad tracks

Coordinates: N 43 30.699 W 79 53.524


Plaque Text

The first firm in the world to produce socket-head screws, the P.L. Robertson Manufacturing Company was formed in Hamilton in 1907 and relocated here the following year. It was established by an Ontario inventor Peter Lymburner Robertson and, using an ingenious process he had developed to punch square holes into cold metal, it manufactured the innovative new screw for industrial markets. In its first two decades the company steadily expanded operations. By 1930, when the last patent on the Robertson screw and the equipment used in its manufacture expired, the firm had already begun to diversify its products. Now operated as the Robertson Whitehouse Company, it has become one of the largest manufacturers of light fasteners, including the original Robertson screw, in North America.


Milton Plaques

Here are the visitors' comments for this page.

(none yet)

Here's where you can send me a comment for this page.

Note: Your email address will be posted at the end of your comment so others can respond to you unless you request otherwise.

Note: Comments are moderated. Yours will appear on this page within 24 hours (usually much sooner).

Note: As soon as I have posted your comment, a reply to your email will be sent informing you.

To send me your comment, click alanlangfordbrown@gmail.com.

Alan L Brown

Note: If you wish to send me a personal email, click here.