Field on,                  Approved on

June 21, 1921, –  December 25, 1923 US1478830 – ORCHARD DISK OR HARROW

April 10, 1926, –  June 14, 1927  US1632303 – DITCHING MACHINE

January 31, 1929 – March 18, 1930  US1751010-WHEEL-MOUNTING-FOR-LAND-VEHICLES

October 21, 1929 – January 12, 1932  US1840402-ROAD-VEHICLE-SUPPORT

October 21,1929 – April 26, 1932  US1855605-OFFSET-DISK-HARROW

August 9, 1929 – April 26, 1932  US1855604-SUBSOILER

November 15, 1937 – April 16, 1940  US2197273-WHEEL-MOUNTING-FOR-LAND-VEHICLES

July 16, 1945 – March 6, 1951  US2543786-TWO-WAY-PLOW-ATTACHMENT-FOR-TRACTORS

October 26, 1945  – March 11, 1952  US2589104-HYDRAULIC-TOOL-SUPPORTING-STRUCTURE

October 26, 1945 – October 20, 1953  USRE23726-HYDRAULIC-TOOL-SUPPORTING-STRUCTURE

October 30, 1945 – January 25, 1949  US2460137-HYDRAULIC-COUPLING

December 2, 1946 – April 21, 1953  US2635518-TOOL-ATTACHMENT-FOR-TRACTORS

June 24, 1947 – March 31, 1953  US2633068-HITCH-DEVICE

September 5, 1947 – August 11, 1953  US26482US2648268 – UNIT CARRIER68-UNIT-CARRIER

June 10, 1948 – December 15, 1953  US2662314-LAND-LEVELER

August 9, 1948 – August 14, 1951  US2564164-HYDRAULIC-TRANSMITTER-MOTOR-UNIT

September 17, 1948 – November 4, 1952  US2616349-INTEGRAL-TOOL-CARRIER

November 8, 1948 – December 6, 1955  US2725809-CARRIER-MEANS-FOR-IMPLEMENTS-OR-THE-LIKE-AND-POWER-MEANS-THEREFOR

September 22, 1949 – July 19, 1955  US2713298-INTEGRAL-TOOL-CARRIER

December 29, 1949 – October 27, 1953  US2656893-OVERLOAD-BRAKE-MEANS-FOR-VEHICLAES

October 7, 1950 – May 5, 1953  US2637256-REVERSIBLE-COLTER-FOR-TWO-WAY-PLOWS

November 8, 1950 – June 19, 1956  US2750860-UB-SOIL-AERATING-CULTIVATOR

March 16, 1951 – May 10, 1955  US2707907-TOOL-CARRIER-AND-TRACTOR-HITCH-DEVICE

April 16, 1951 – July 31, 1956  US2756659-RELEASABLE-PLOW-STANDARD

April 22, 1952 – August 28, 1956  US2760423-COIL-SPRING-CULTIVATOR-SHANK-AND-CLAMP

October 17, 1952 – October 4, 1955  US2719474-TOOL-CLAMP

March 18, 1954 – July 22, 1958  US2843948-LAND-LEVELER

May 18, 1955 – May 31, 1960  US2938285-BULLDOZER

December 16, 1955 – October 14, 1958  US2856016-CONDUIT-AND-REEL-STRUCTURE-FOR-REMOTE-CONTROL-POWER-SYSTEM

June 11, 1956 – December 8, 1959  US2916300-ADJUSTABLE-DRAWBAR

January 9, 1967 – July 29, 1969  US3457751-SHEAVE-FORMING-MACHINE
I started working for Northwest Equipment in 1966 in the Bagger Depart.  That fall bagger sales slowed down (normal for that time of year), I was transfers to the Tiller Department.  The sheaves (pulleys) that we used then were cast iron.  Jesse and Orie Durland were developing this machine.  The sheave was made from sheets of deep drawn pickled in oil metal that was sheered to the proper length for 10″, 12″ & 15″ sheaves, then ran through this machine.  It formed the metal into a grove that would fit a C section drive belt that was used to power the rotary tiller.  Once it was formed it had a liner and center plates pressed into it then machined to run true.  I spent many hours on this machine.  It did change some from this drawing, it has two cranks like shown but one was on ether side and a foot pedal.  You would be working both hands and one of your feet at the same time (MEMORIES, MEMORIES).