Patent for combination lock for safes or vaults with added mechanism for dispensing a gas to deter robberies.

Patent for an improved toothed drum for cotton ginning. Each drum has a series of sawed disks that help separate the cotton fibers.

Patent for improvements in Valve-Grinding implements. This improvement is applicable to practically any type of engine or motor and to the different types of valves employed therein. This valve relates to the rotating of the valves of internal combustion engines and the like when the same is being ground to effect a proper seating action.

Report discusses the results of testing on a B.M.W. engine in an altitude chamber where temperature and pressure can be controlled to simulate flight at various altitudes. Results for various engine speeds, altitudes, and propeller speeds are provided.

Patent for automatic gas release packer that uses constant pressure regulated by spring-controlled valves for better control when lifting oil out of wells.

Patent for a broom designed to allow the straw to be easily changed as often as needed and to hold the straw firmly in place even when considerable pressure is used, including illustrations and instructions.

Patent for improvements to gas producers of the type in which combustible gases are evolved from coal, lignite, etc., during the incomplete combustion thereof.

Patent for a photograph printer that includes a mask mechanism to create prints of different sizes. Construction is such that the person using the printer can work the printer accurately and quickly complete work.

Patent for a refrigerator made of wood with an inner shell of reinforced concrete and vacuum chamber or metal jacket. "The inner concrete shell is divided into four separate chambers, the former containing ice and the other three being adapted to contain food." (lines 61-64)

Patent for Improvements in well buckets. The bucket has an inlet valve at the bottom and an air escape valve at the top that permits air to escape freely while preventing the entrance of dirt and extraneous matter to the interior of the bucket.

Patent for an improvement in the design of wrenches, particular for heavy work such as deep well drilling, but still being able to be designed at smaller sizes to handle lighter work.

Patent for calipers that make it easier to read measurements, by having a strip of measuring tape at the ends that allows users to determine the distance between the arms easier. The measuring tape component is also retractable.

Patent for a general external application ointment made of chloride of zinc, powdered metallic cobalt, blood root, and glycerine.

Patent for a new universal grater which eliminates the risk of injury the user may gain from grating materials.

This report presents the attempt to develop a law which will permit the use of results obtained on small models in a tunnel for the calculation of full-sized airplanes, or if it exists, a law of similitude relating air forces on a full-sized plane to those on a reduced scale model.

Note presenting a determination of the relative merits of various fuels for use in high compress engines. The main purpose is to discuss a phase that has not been given much attention in previous studies; specifically, the standpoint of the influence of charge temperatures and pressures on the temperatures and pressures after combustion.

"It has been customary to calculate the strength of the rear wing beam for the 'high speed' condition on the assumption that the center of pressure was at 0.50 of the wing chord. It can be shown that this assumption is not justified, regardless of the utility of a 'high speed' condition in strength calculations" (p. 1).

This report considers as the dominating characteristic, either the load carried, the speed, the radius of action, the fuel consumption, the activity of transport, or, lastly, the qualities of comfort and safety. The first four factors determine the theoretical efficiency, while the others determine its practical efficiency.

In order to study the distribution of the pressure on the surfaces of a fuselage and the influence of the wing on the air flow along these surfaces, we have made tests pertaining to the bottom and one side. In this particular case, the wing causes an increase in pressure along the sides of the fuselage.

The evolution of construction techniques and the use of metal in wings is presented. Drag is discussed along with the fuselage and tail. The interaction of these parts is also investigated.

The speed, barometric pressure, and number of revolutions of the engine of a seaplane were measured, including tests with stopped engine. The mean data obtained are given in the following note; the results of the gliding tests are used for the computation of the lift and drag coefficients, and by making use of them the results of the engine flights are used for the computation of the propeller efficiency.

"Hitherto it has been generally assumed, in calculating the fall of an airplane, that the forces withstood by the latter were distributed uniformly throughout the whole length of the wing. In reality this is not the case and German engineers in particular are now assuming an elliptical distribution of the forces. The latter hypothesis has made it possible to carry out a certain number of calculations which have been verified by experiment" (p. 1).

This report examines the question of the responsibility of the carrier in air traffic. The French were concerned about the competitive advantage the English companies enjoyed because of differences in their respective laws.

To sum up, Professor Joukowski's theory of supporting wings renders it possible to calculate the coefficient of lift in terms of the angle of attack, and Prandtl's coefficient of induced drag and the correction of the angle of attack in terms of the disposition and aspect ratio of the wings.