Airplane Performance as Influenced by the Use of a Supercharged Engine (open access)

Airplane Performance as Influenced by the Use of a Supercharged Engine

"The question of the influence of a supercharged engine on airplane performance is treated here in a first approximation, but one that gives an exact idea of the advantage of supercharging. Considered here is an airplane that climbs first with an ordinary engine, not supercharged, and afterwards climbs with a supercharged engine. The aim is to find the difference of the ceilings reached in the two cases" (p. 1).
Date: May 1920
Creator: de Bothezat, George
Object Type: Report
System: The UNT Digital Library
Notes on the Theory of the Accelerometer (open access)

Notes on the Theory of the Accelerometer

Report discusses several types of accelerometers and how they function. Methods for reducing error and determining the source of the error, including the best placement for the device, are included.
Date: May 1920
Creator: Warner, E. P.
Object Type: Report
System: The UNT Digital Library
The Problem of the Helicopter (open access)

The Problem of the Helicopter

Report discussing some of the issues regarding the design and operation of helicopters and the theoretical basis behind them. Some particular issues covered include propeller blade design, helicopters in forced descent, horizontal travel, and stability and control.
Date: May 1920
Creator: Warner, E. P.
Object Type: Report
System: The UNT Digital Library
Relation of Rib Spacing to Stress in Wing Planes (open access)

Relation of Rib Spacing to Stress in Wing Planes

The stress relations to the fabric and the rib consequent upon a change of spacing between ribs in a wing plane are discussed. Considering the wing plane as a static structure, and ignoring the question of aerodynamic efficiency, it appears that the unit stress in the rib and fabric will remain constant for constant p if the linear dimensions of both rib and fabric are increased alike, viz., if wing and fabric remain geometrically similar. Since the bulge and the structural dimensions remain geometrically similar, the whole distended plane remains so, and hence should have the same pressure distribution and efficiency.
Date: May 1920
Creator: Zahm, A. F.
Object Type: Report
System: The UNT Digital Library
AUTOMOBILE-TOOL. (open access)

AUTOMOBILE-TOOL.

Patent for an automobile tool for the Ford make of automobiles that "will hold the springs away from the bands and allow the bands to be removed and replaced or adjusted, when necessary" (lines 29-32) including instructions and illustrations.
Date: May 4, 1920
Creator: ROBERGE, JAMES Z.
Object Type: Patent
System: The Portal to Texas History
Battery-Plate and Terminal Connection (open access)

Battery-Plate and Terminal Connection

Patent for improvements on a battery plate and terminal connections. Plate lugs and the terminal for the battery are a solid piece to fit more battery sizes and prevent the lugs from breaking off.
Date: May 4, 1920
Creator: Hawkins, Alda F.
Object Type: Patent
System: The Portal to Texas History
Button-Fastener. (open access)

Button-Fastener.

Patent for a button fastener for clothing that is not liable to damage cloth.
Date: May 4, 1920
Creator: Taylor, Albert Joshua
Object Type: Patent
System: The Portal to Texas History
Covertible Stock and Freight Car. (open access)

Covertible Stock and Freight Car.

Patent for an improved process of constructing convertible stock and freight train cars, including illustrations.
Date: May 4, 1920
Creator: Wyatt, Everett
Object Type: Patent
System: The Portal to Texas History
Locomotive Driving-Box. (open access)

Locomotive Driving-Box.

Patent for improvements in locomotive driving boxes. Designed to "eliminate the necessity of removing the driving wheels" (lines 13-14) to replace the crown brasses, "eliminate the necessity of removing the driving box" (lines 16-17) to avoid lateral wear, and eliminates the necessity of expensive machine work.
Date: May 4, 1920
Creator: Simmons, Arthur, W.
Object Type: Patent
System: The Portal to Texas History
Peanut-Roaster. (open access)

Peanut-Roaster.

Patent for a new and improved peanut roaster with a rotating drum that can sound an alarm after a certain interval of time and can be moved directly over a roasting flame, including illustrations.
Date: May 4, 1920
Creator: Peckham, Samuel C.
Object Type: Patent
System: The Portal to Texas History
Pump-Piston. (open access)

Pump-Piston.

Patent for an improved pump piston used to pump oil from deep wells. The main improvement in this piston is that it is less susceptible to damage from sand or sediment by keeping sediment out of the piston valve, thus preventing it from accruing any long term damage that may render the piston irreparable. This design is also capable of fixing any wear due to sand or grit without removing the piston from the well.
Date: May 4, 1920
Creator: Coulson, William J.
Object Type: Patent
System: The Portal to Texas History
Pump-Plunger (open access)

Pump-Plunger

Patent for an improvement in Pump-Plungers. "It has a particular application to pumps of this character for use in oil or water wells where the liquid is mixed with sand" (lines 13-16), including illustrations.
Date: May 4, 1920
Creator: Mackenzie, Alexander S.
Object Type: Patent
System: The Portal to Texas History
Roofing-Tile. (open access)

Roofing-Tile.

Patent for an improved plastic roofing tile with sealing, locking, pseudo-dove tail joints.
Date: May 4, 1920
Creator: Martin, John M.
Object Type: Patent
System: The Portal to Texas History
Signaling-Boiler (open access)

Signaling-Boiler

Patent for a signaling boiler designed to test food during the cooking process to determine whether food has completed cooking, and to signal via a whistle when said food is determined to have been properly cooked. Additional design details include the provision of a supporting mechanism for potatoes and other vegetables to rest on, as well as a compact form of the overall device.
Date: May 4, 1920
Creator: Kelley, Marven
Object Type: Patent
System: The Portal to Texas History
Stamping Machine. (open access)

Stamping Machine.

Patent for improvements to stamping-machines used for the purposes of marketing nuts. The device can efficiently perform the laborious act of stamping individual nuts with a trademark. It can be adjusted to stamp nuts of any size, along with other similar objects, without breaking or injuring the nut.
Date: May 4, 1920
Creator: Wischhesen, Frederick B.
Object Type: Patent
System: The Portal to Texas History
Valve-Flushing Means (open access)

Valve-Flushing Means

Patent for a method of expelling debris and deposits in a foot valve, including illustrations.
Date: May 4, 1920
Creator: Coulson, William J.
Object Type: Patent
System: The Portal to Texas History
Window Attachment. (open access)

Window Attachment.

Patent for a sash attachment that steadies the movement of the window sash within a window frame and prevent rattling.
Date: May 4, 1920
Creator: Dysart, Marby P.
Object Type: Patent
System: The Portal to Texas History
Battery Terminal Fastening (open access)

Battery Terminal Fastening

Patent for fastening "the rubber caps or tops on the cells of storage batteries in various ways." (Lines 12-14.)
Date: May 5, 1920
Creator: Hawkins, Alda F.
Object Type: Patent
System: The Portal to Texas History
Apparatus for Raising Liquids from Deep Wells. (open access)

Apparatus for Raising Liquids from Deep Wells.

Patent for improvements for raising liquids from deep wells. "It has a particular application to the raising of fused sulfur from the well in the liquid state" (lines 14-16).
Date: May 11, 1920
Creator: Hebert, Joseph A.
Object Type: Patent
System: The Portal to Texas History
Combustion-Gas and Crude-Oil Burner (open access)

Combustion-Gas and Crude-Oil Burner

Patent for a burner which can be used with either gas or oil, or both at once.
Date: May 11, 1920
Creator: Runyan, Benjamin F.
Object Type: Patent
System: The Portal to Texas History
Cotton-Chopper (open access)

Cotton-Chopper

Patent for treating soil for agricultural purposes. This invention destroys the ridges used for planting and growing cotton and also cultivating the soil in the vicinity of the ridges.
Date: May 11, 1920
Creator: Kriel, John J.
Object Type: Patent
System: The Portal to Texas History
Crude-Oil Burner. (open access)

Crude-Oil Burner.

Patent for an improvement on a crude oil burner that can adapt to various grades of crude oil as well as providing intense heat to various sizes of boilers.
Date: May 11, 1920
Creator: Runyan, Benjamin F.
Object Type: Patent
System: The Portal to Texas History
Cylindrical Structure (open access)

Cylindrical Structure

Patent for improvements for hollow structures of cylindrical shape that provides "for formation of such a structure of lumber and metal materials of standard dimensions and shapes that ordinarily can be obtained from commercial stocks, so that the minimum amount of shop work on materials will be required." (lines 18-22)
Date: May 11, 1920
Creator: Pearson, Terrell Brooks
Object Type: Patent
System: The Portal to Texas History
Drag (open access)

Drag

Patent for a ground drag for "grading and removing refuse from the surface of the soil" (lines 10-12) that can be steered and that can gather and dispose of the dirt it levels off, including illustrations.
Date: May 11, 1920
Creator: Nelson, Charley E.
Object Type: Patent
System: The Portal to Texas History