Single Edge Folding Razor
Filed Tuesday, 9th September 1919
Published Tuesday, 3rd May 1921
Inventor Christian E. A. Gronbech
An adjustable single edge version of the Bigelow-Parkin razor provided with adapters for different single and double edge blades. Never produced as far as I know, but this patent is well worth the read. I want one.CPC Classification:
Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
Performing Operations; Transporting
Hand Cutting Tools; Cutting; Severing
Hand-Held Cutting Tools Not Otherwise Provided For
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A PDF version of the original patent can be found here.
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, Christian E. A. Gronbech, a citizen of the United States, residing at Woodhaven, Queens county, Long Island, have invented certain new and useful Improvements in Safety-Razors, of which the following is a specification.
My invention relates to an improved safety razor wherein different types of blades may be interchangeably used with equal facility.
The principal object of the invention is to provide a neat, simply constructed and compact safety razor designed to interchangeably receive different kinds of blades, without requiring any adjustment or rearrangement of the parts of the razor. An other object is to provide in a razor of this kind, simple means for adjusting the depth or protrusion of the cutting edge of the bldcle so as to secure a more or less close shaving action, as may be desired.
The invention comprises the structural features and combinations hereinafter claimed, and fully described with reference to the accompanying drawing in which,
In carrying my invention into practice I preferably provide a separate holder for each different kind of blade to be used, and construct the razor so that it may, with equal facility, receive any one holder at a time, without necessitating any adjustment, reconstruction or rearrangement of the parts of the razor.
Referring in detail to the accompanying drawing,
Extending lengthwise of the base plate
Formed in the non-depressed half of the base plate
The edge of the base plate
Holders for three types of blades are shown in the drawing. The holder of
The holder of
The holder of
It will be understood that adjustment of the cutting edge of the blades in the forms of
1. A safety razor comprising a base plate and a clamping plate movably connected therewith, holding members movably mounted at the ends of said clamping plate, and means whereby different kinds of blade holders may be received, movably retained, and clamped, between said plates.
2. A safety razor comprising a base plate, a clamping plate movably connected therewith, handle members movably connected to each end of said clamping plate, and blade holding means adapted to be clamped to or released from the base plate by greater or less pressure on said handle members.
3. A safety razor comprising a base plate and a clamping plate having one end pivoted to said base plate, handle members pivoted to the ends of said clamping plate and complemental means adjacent the rear edge of said plates adapted to limit the lateral movement of a blade holder confined therein.
4. A safety razor comprising a base plate, a clamping plate pivoted thereto, handle sections pivotally mounted at opposite ends of said clamping plate, and webs projecting from said handle sections and adapted, when the razor is closed, to press against the end and under face of said base plate and to lock said clamping plate in position.
5. The combination with the base plate of a safety razor, of a blade-holder adapted to be received by said base plate, an inclined slot formed in one of said members, and an inclined finger carried by the other member and designed to enter said slot.
6. A safety razor comprising the combination with a base plate having a lengthwise depression and an inclined slot therein and a rib at one edge thereof, of a clamping plate pivoted to said base plate and having a flange positioned to aline with and engage said rib, and a blade-holder adapted to be clamped between said plates, said blade-holder having a projecting inclined finger designed to extend through said slot.
In testimony whereof I have affixed my signature in presence of two witnesses.
Christian E. A. Gronbech.