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Centrifugal Separator

Description: Patent for improvements to previous patent application serial #846,524 for a centrifugal separation machine, intended for the purposes of separating heavier materials from lighter materials.
Date: unknown
Creator: Baylis, Everest A.
Item Type: Refine your search to only Patent

Tube-Mill.

Description: Patent for improvements in tube-mills (employed for ore and other substances) which is meant to help support and drive rotating drums or cylinders of the mills allowing for more full appearances.
Date: October 1, 1918
Creator: Bergman, Julius G.
Item Type: Refine your search to only Patent

Irrigator

Description: Patent for an irrigator used to treat piles (hemorrhoids) and similar diseases. A nozzle delivers liquid to wash the surface of the mucus coating of the afflicted area, and then drains the liquid without obstructing the flow of the liquid. Patent includes illustrations.
Date: January 18, 1921
Creator: Phillips, Edwin R.
Item Type: Refine your search to only Patent

Valve-Spring Lifter.

Description: Patent for valve spring lifter designed for use with internal combustion engines that holds the intake or exhaust valve springs in an elevated or rigid position. Illustrations included.
Date: June 18, 1918
Creator: Mountain, Thomas O.
Item Type: Refine your search to only Patent

Weed-Cutter

Description: Patent for "a simple, light and inexpensive tool which an be handled easily by women working in gardens and fields, particularly for cutting sand burs and cockle burs" (lines 9-13) including instructions and illustrations.
Date: September 10, 1918
Creator: Klaffert, Katie
Item Type: Refine your search to only Patent

Windmill

Description: Patent for a windmill that rotates on a vertical and horizontal axis. The blades are mounted to stop in order to prevent damage to the windmill should pressure occur.
Date: November 11, 1919
Creator: Brown, Archie Edwards
Item Type: Refine your search to only Patent

Windmill.

Description: Patent for a windmill with vanes that can compensate for varying wind speeds without being damaged by high winds.
Date: October 21, 1919
Creator: Ochoa, Victor Leaton
Item Type: Refine your search to only Patent

Trailer.

Description: Patent for improved construction and arrangement of trailers. This improvement will allow an easy turning movement where a number of trailers are connected while admitting of strain between the various trailers when they are turning a corner or going around a curve.
Date: August 20, 1918
Creator: Watkins, Leigh
Item Type: Refine your search to only Patent

Hydraulic Classifier.

Description: Patent for hydraulic classifier for the treatment of ore. The invention subjects settling solid particles to a secondary classification and prevent the contamination of the settling solids before they are discharged.
Date: March 21, 1922
Creator: Allen, Charles
Item Type: Refine your search to only Patent

Spark-Arrester.

Description: Patent for a spark aresster that is designed to prevent the discharge of sparks from a flue, particularly flues for small stoves used in army tents.
Date: January 27, 1920
Creator: Ashby, Bert A.
Item Type: Refine your search to only Patent

Priming Device.

Description: Patent for a priming device, used on internal combustion engines, that can be used to assist an engine heat up. Through this device, users can accelerate this process and benefit from a more fuel-efficient vehicle.
Date: July 9, 1918
Creator: Brooks, Howard
Item Type: Refine your search to only Patent

Toy Projectile

Description: Patent for toy arrows and similar projectiles "which may be safely shot or projected by children without danger of the arrow injuring any object or hurting the child" (lines 12-15). Additionally it can be used to kill flies without smashing them.
Date: April 9, 1918
Creator: Pewther, Judson C.
Item Type: Refine your search to only Patent
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