Spitball Gun Loading Mechanism for Automatic Paper Wetting
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Solution Overview
Problem
Existing spitball guns require manual wetting of paper ammunition, which is unsanitary and labor-intensive.
Innovation Solution
A spitball gun with integrated components for automatic wetting, cutting, and projecting paper ammunition, featuring a water tank, paper advancing chamber, firing pin handle, and spring-loaded plunger mechanism for efficient paper loading and projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual wetting of paper ammunition is used, then the device complexity is reduced, but the ease of operation deteriorates and hygiene is compromised
Solution Approach 1:
The system automatically wets the paper ammunition through a pump mechanism that delivers water from a reservoir to the paper in the chamber, eliminating the need for manual wetting by the user. This self-service approach resolves the contradiction by automating the wetting function, improving ease of operation while maintaining acceptable device complexity through integration of simple mechanical components.
2Device complexity
If manual wetting process is used, then the device complexity is reduced, but the productivity deteriorates due to considerable user effort required
Solution Approach 1:
The automated pump system performs the wetting function without requiring continuous user intervention, allowing the user to simply load paper and trigger the firing mechanism. This significantly improves productivity by reducing the time and effort required for each ammunition preparation cycle, while the pump mechanism remains mechanically simple.
3Ease of operation
If automated wetting mechanism is added, then the ease of operation improves, but the device complexity increases
Solution Approach 1:
The pump mechanism serves multiple functions: it wets the paper ammunition, and its motion can be integrated with the loading and firing mechanisms. By designing the system so that a single mechanical action (pulling the loader) performs multiple functions (loading paper, actuating pump, preparing for firing), the patent minimizes the increase in device complexity while maximizing ease of operation.
Solution Approach 2:
The patent combines the wetting pump, paper loading mechanism, and firing system into an integrated assembly where components share common structural elements and actuation mechanisms. This merging approach reduces the overall complexity increase that would result from adding automated wetting, as the new components are blended with existing ones rather than added as separate systems.
4Manufacturing precision
If paper cutting function is integrated, then the manufacturing precision of paper wad formation improves, but the device complexity increases
Solution Approach 1:
The paper cutting function is integrated into the existing loader mechanism, where the same moving components that advance and compress the paper also perform the cutting action. By merging cutting, loading, and compression functions into a single integrated mechanism, the patent achieves precise paper wad formation without proportionally increasing device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables sanitary and efficient operation by automating the wetting and projection process, reducing user effort and ensuring consistent paper wad formation.
Implementation Method 1
The elongated cylinder is spring loaded and further comprises a proximal end terminating with an air plunger
Data Source
Figure 1
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Figure 3A
AI summary
Described is a spitball gun that is operable for collecting, wetting, and projecting paper ammunitions. The spitball gun includes a paper advancing chamber having an opening for receiving paper ammunition and an advancing mechanism for advancing paper through the paper advancing chamber to a loading chamber. A water tank is also connected with the loading chamber. An indexing lever is used to cause paper to be pulled through the paper advancing mechanism while water is released onto the paper from the water tank. A firing pin handle with a connected paper cutter is used to cut the paper and load the paper into the loading chamber. Finally, air from an attached air tank is used to expel a wetted paper wad from the loading chamber and through the barrel of the spitball gun.