The US patent for the '1924' razor design
FiledFriday, 3rd December 1909
PublishedTuesday, 13th April 1915
InventorJulius Bueno de Mesquita
Parts not referenced in the text: None
Parts not referenced in the images: None
To all whom it may concern:
Be it known that I, Julius Bueno de Mesquita, a subject of the King of Great Britain, residing at London, in the county of London, England, have invented certain new and useful Improvements in Safety-Razors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to improvements in safety razors of the type, employing imperforate wafer blades, and among the objects in view is the provision of means for firmly and efficiently retaining the blade, in position during operation.
With this and further objects in view, as will in part be hereinafter stated and in part become obvious, the invention comprises certain novel constructions, combinations and arrangements of parts as herein set forth and claimed.
In the accompanying drawing,—
Referring to the drawing by numerals,
At the intermediate point or point of engagement of spring
An internally threaded sleeve
The operation, after the parts are assembled, is precisely the same as with any of the various types of safety razors and the assemblage of the blade with the holder is materially simplified while the firm, rigid retention is insured. When the cap is in the open position, as seen in
What I claim is:—
1. In a safety razor, the combination with a blade support, of a cap pivoted thereto on an axis extending substantially along the front of the blade support and having a top plate with its front edge in rear of the pivot of the cap turned downwardly to a line below the under face of the cap sufficiently for contacting with the upper face of a blade sustained by the support prior to a complete closing of the cap, whereby the complete closing of the cap causes the downwardly turned edge to clamp the blade against the support under spring pressure, the said downwardly turned edge engaging the blade adjacent the cutting edge thereof.
2. In a safety razor, the combination with a blade support, of a cap therefor, a spring carried by the cap and having free ends disposed in position for engaging and pressing forwardly a blade sustained by said support, means for preventing forward movement of said blade, and a pivotal connection between the cap and support, the blade engaging portion of the spring having a transversely arcuate form.
3. In a safety razor, the combination with a blade support, a cap therefor adapted to be moved relative to a blade sustained by the support, a spring carried by the cap in position for engaging and pressing forwardly a blade sustained by said support, means for preventing forward movement of the blade, and a pivotal connection between the cap and support forward of the spring.
4. In a safety razor, the combination with a blade support, of a cap therefor, and a spring carried by the cap and having free ends positioned, when the cap is being moved to a closed position, to approach and engage, with an edgewise movement, the rear edge of a blade sustained by said support, and to be compressed thereby for exerting a forward pressure to the blade, and means for retaining said blade against forward movement, the spring being of transversely arcuate form at the place of engagement with the blade.
5. In a safety razor, the combination with a blade support, of a cap therefor, and a spring carried by the cap, said spring having rounded portions extending longitudinally of and adapted to engage edgewise the rear edge of a blade sustained on the support, the rounded portions of the spring being tensioned to be sprung rearwardly in rear of such blade when caused to engage the same as the cap approaches its closed position for exerting spring pressure forwardly on the blade.
6. In a safety razor, the combination with a blade support, of a cap therefor pivoted at the front of and adapted to swing forwardly from the support when opening, the cap having a top plate formed with its front edge portion bent to comprise a blade engaging spring when closed, and means for detachably retaining the cap closed.
7. In a safety razor, the combination, with a blade suport, of a cap pivoted to the support and adapted to be swung forwardly therefrom when opening, and a blade retaining spring carried by the rear portion of the cap and formed concavo-convex and comprising a longitudinal trough presenting a transversely rounded portion to a blade on the support.
8. In a safety razor, the combination, with a blade support, of a cap pivoted to the forward portion of the support and adapted to swing forwardly therefrom, the forward edge portion of the cap being extended beyond and free to move relative to the main body of the cap and being curved toward the frame support for engaging a blade on the support and retaining the same under downwardly exerted spring pressure when the cap is closed.
9. In a safety razor, the combination, with a blade support, having a blade detent at its forward portion, of a cap pivoted to the support at the forward portion thereof and adapted to swing on its pivot forwardly relative to the support, and a spring carried by the rear portion of the cap and disposed to engage the rear portion of and press forwardly on a blade sustained by the support when the cap is closed.
In testimony whereof I affix my signature in presence of two witnesses.
JULIUS BUENO de MESQUITA.
Edgar M. Kitchen.