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Abdominal Supporter.

Description: Patent for a new and improved abdominal supporter. This design "consist[s] of the waist-belt, the abdominal sector-shaped pads hung from the waist-belt by elastic straps, the straps buttoned to the belt behind and to the bottom of the abdominal pads in front, the side straps connecting the abdominal pads with the pieces at the back, and the front strap connecting the two abdominal pads together with the shoulder-straps" (lines 70-79).
Date: December 25, 1888
Creator: Gray, Harriet N.
Item Type: Refine your search to only Patent

Acetylene-Gas Apparatus.

Description: Patent for improvements in “gas-machines in which the gas is generated from calcium carbid; in which the gas will be thoroughly washed before passing to the distributing-pipe, thus affording a pure white light, and further to provide a means for running off coal-tar that may gather on the top of the water in the machine.” (Lines 9-18) Illustration is included.
Date: December 11, 1900
Creator: Metzger, Frederick
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Acetylene-Gas Apparatus.

Description: Patent for machines that generate acetylene gas for a "simple and comparatively inexpensive construction, in which the gas is thoroughly washed before entering the service-pipe and in which the water-supply to the generator is controlled by the gas pressure and the carbid kept at all times cooled by surrounding water" (lines 11-17).
Date: December 4, 1900
Creator: McGoldrick, William Hamilton
Item Type: Refine your search to only Patent

Acetylene-Gas Generator.

Description: Patent for "an improved apparatus for generating acetylene gas" (lines 12-13). The apparatus includes a carbid receptacle with a conical bottom and a cylindrical valve for better control of the carbid, as well as a gas tank with a gasometer-bell which operates the system.
Date: December 3, 1918
Creator: Lay, Claud
Item Type: Refine your search to only Patent

Addressing-Machine.

Description: Patent for an improved addressing machine, which will "paste, cut, and attach the slip simultaneously, or with one operation" (lines 26-27), with instructions and illustrations.
Date: December 27, 1887
Creator: Eberhardt, Theophilus Charles
Item Type: Refine your search to only Patent

Adjustable Attachment for Freight-Car Doors.

Description: Patent for a mechanism that creates "an adjustable attachment for freight-car doors, for preventing sparks and other objectionable matter from getting into the cars, and means for operating the attachment that is adapted for use in securing the door in different positions of adjustment, and for connection with the body of the car by means of a seal-support, in order that the fixed adjustment of the door cannot be changed without breaking the seal" (lines 12-21).
Date: December 28, 1886
Creator: Duzan, Thomas H.
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Adjustable Device for Dressing Down Bearings

Description: Patent for a tool that dresses down bearings. Railroad engine journals and their corresponding bearings show wear over time. When replacing bearings into such a journal, without adaptation of the bearing there will be an improper fit, resulting in "hot journals" or "hot boxes". This tool adapts a bearing to a proper fit for the journal into which it will be installed.
Date: December 12, 1922
Creator: Mitchell, William A.
Item Type: Refine your search to only Patent

Adjustable Metallic Trunk-Strap.

Description: Patent for an adjustable metallic trunk strap that connects in multiple directs so that they will reinforce the trunk while allowing it to be opened. It includes illustrations of the strap on the trunk and various components in detail.
Date: December 4, 1906
Creator: Mertins, John Lewis
Item Type: Refine your search to only Patent

Adjustable Split Lock-Nut or Union

Description: Patent for an adjustable split cock-nut or union that is of a simple, cheap, and efficient construction with an intended use on valve rods of internal combustion engines. This device is designed to withstand direct pressure, blows, and torque forces.
Date: December 2, 1919
Creator: Dickinson, Harry E.
Item Type: Refine your search to only Patent

Aeroplane

Description: Patent for an aeroplane which has its equilibrium maintained by the operator through levers that bring the plane up or down.
Date: December 6, 1910
Creator: McManus, Augustus F. W.
Item Type: Refine your search to only Patent
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