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Device for Teaching Music

Description: Patent for a music education device aimed toward children and basic music building blocks. It is designed to teach the positions of piano keyboard notes through the use of differently dressed and named puppets. These puppets can be adjusted to also introduce basic musical concepts like rests, rhythm, and time.
Date: April 20, 1920
Creator: Maxwell, Annie L.
Item Type: Refine your search to only Patent

Percolator.

Description: Patent for a percolator for coffee or tea that is "reliable and efficient in its operation, readily and easily adjusted to fit the various sizes of pots and also inexpensive in manufacture." (lines 44-47)
Date: April 20, 1920
Creator: Rose, Isabell M.
Item Type: Refine your search to only Patent

Cotton-Chopper.

Description: Patent for improvements to Cotton-Choppers. The invention relates to the agricultural implements and more particularly to machines for thinning rows of cotton, whereby to prevent crowding of the plants and insuring a stocky growth which will under favorable condition produce a good crop.
Date: January 20, 1920
Creator: Ogden, James D.
Item Type: Refine your search to only Patent

Hair-Clipper

Description: Patent for hair clippers in which the power-driven device will move positively in action comprises a few numbers of parts and is easy to operate.
Date: January 14, 1920
Creator: Jones, Sidney P. & Wallace, David P.
Item Type: Refine your search to only Patent

Water-Gage.

Description: Patent for a water-gage measuring the height or volume of water in a steam boiler, particularly those "held closed by the weight of the operating handle" (lines 11-12). The device is designed for simple manufacture and easy assembly & disassembly without tools, and features a valve seat that stays in place, illustrations included.
Date: December 30, 1919
Creator: Leidecker, Helmoth M.
Item Type: Refine your search to only Patent

Shear-Trimmer

Description: Patent for improving shear trimmers particular to those cutting wall paper. It "aims to provide a trimmer which is of simple and economical construction, and to further provide means for guarding the blade" (line 19-22) when it's not in use .
Date: June 11, 1919
Creator: Hilliard, John M.
Item Type: Refine your search to only Patent

Overall Jacket Or Waist.

Description: Patent for an overall jacket or waists, the construction of which permits of its formation with less material and its use with greater comfort and convenience by terminating at its lower edge in a waist band, which, in use, is intended to be seated upon or lap the upper edges or portions of the trouser sections, thus avoiding the extensions usually present with a wait section or jacket into the trouser section.
Date: April 15, 1919
Creator: Elliot, Joseph Samuel
Item Type: Refine your search to only Patent

Stalk-Cutter Attachment

Description: Patent for improvements to stalk-cutter attachments to plows. The invention allows stalks to be cut by the plow and then turned under it into the soil to decrease labor an improve plow performance.
Date: April 7, 1919
Creator: Wylie, Arthur E.
Item Type: Refine your search to only Patent

Automobile-Cooling System

Description: Patent for an improvement to the cooling system of the internal combustion engine of an automobile. "The object of the invention being to provide an improved cooling system of this kind which embodies means for cooling the circulatory water in the radiator by forcing air therethrough and also embodies means for directly cooling the engine by subjecting the same to the action of a blast of air."
Date: September 3, 1918
Creator: Goodwin, Thomas J.
Item Type: Refine your search to only Patent

Cotton Chopper.

Description: Patent for a "cotton chopper attachments for cultivators and seeks to simplify the construction, reduce the cost of manufacture, and increase the efficiency os such attachments" (lines 9-13) including illustrations and instructions.
Date: August 6, 1918
Creator: Jones, Martin A.
Item Type: Refine your search to only Patent

Overall-Waist

Description: Patent for connections between union overalls and coat (waist). This invention enables a close overlap between trousers and coat, "to avoid all loose or flying portions of the garment which might otherwise impede or obstruct the free use of arms of the wearer or catch in machinery" (p.1 lines 51 to 55) etc.
Date: July 16, 1918
Creator: Elliott, Joseph S.
Item Type: Refine your search to only Patent

Mechanical Starter

Description: Patent for "improvements in mechanical starters for internal combustion engines" (lines 10-11). It is designed for the use in automobiles, trucks, and similar vehicles.
Date: January 3, 1918
Creator: Johnson, William S.
Item Type: Refine your search to only Patent

Linotype Machine

Description: Patent for used producing lines of type, and it is the object of the invention to provide a comparatively simple, small, inexpensive and compact machine of that character generally resembling a type write in its construction and operation, and operable to produce lines of type.
Date: November 20, 1917
Creator: French, Morris
Item Type: Refine your search to only Patent
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