CA Patent: 128,328 - Roof rafter calculating device


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CA Patent: CA-128,328

Roof rafter calculating device

Patentees:

Donald Robertson (exact or similar names) - New Westminster, BC Canada

James A. Atkinson (exact or similar names) - Central Park, BC Canada

USPTO Classifications:

Tool Categories:

layout tools : squares : carpenter squares

trade specific : carpenter

Assignees:

None

Manufacturer:

Ross & Clements - Vancouver, BC Canada

Witnesses:

Unknown

Patent Dates:
Applied:	May 25, 1910
Granted:	Sep. 27, 1910

Patent Pictures:

CIPO Data
Espacenet patent
Report data errors or omissions to steward Jeff Joslin

Description:

An example is reported, stamped "MANF'D BY ROSS & CLEMENTS VANCOUVER B.C" and "R & A GOTEM SQUARE PAT SEP 27 1910". The square has scales for "Hip and Valley" and "Rise Per Foot".