Collins Safety Razor
Patent US1501450
Invention Razor
Filed Monday, 26th April 1920
Published Tuesday, 15th July 1924
Inventor Hugo S. Hasselquist
Owner Collins Safety Razors
Language English
CPC Classification:B26B21/20
- B26B21/20
Safety razors with one or more blades arranged transversely to the handle involving blades with more than two cutting edges; involving disc blades - B
Performing Operations; Transporting - B26
Hand Cutting Tools; Cutting; Severing - B26B
Hand-Held Cutting Tools Not Otherwise Provided For - B26B21/00
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 - B26B21/08
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 involving changeable blades - B26B21/14
Safety razors with one or more blades arranged transversely to the handle
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Parts not referenced in the images: None
To all whom it may concern:
Be it known that I, Hugo S. Hasselquist, a citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Razors, of which the following is a specification.
This invention pertains to various features of novelty and advantage in razors, and concerns more particularly those of the safety type having suitable guards or shields associated with the sharp edge of the razor-blade.
One object of the invention is to provide a razor and its blade of such shape and form that a sheer or glancing cut will be effected, although the razor is drawn or operated in a substantially straight line.
A further object of the invention is to supply a razor of a shape adapted to more conveniently and effectively conform to the shapes of those parts of the body on which it is used, and, accordingly, in the preferred embodiment of the invention, the razor-blade is of flat, circular, disc form and is mounted in a round, enlarged head on the end of a suitable elongated handle. It will be appreciated, therefore, that all active portions of the circular blade edge except one theoretical point will have a slicing or diagonal cutting action on the hairs. Furthermore, all parts of the blade may be employed in the cutting or shaving operation since its edge is sharp around its entire periphery.
Other features of novelty also reside in the manner of adjusting the blade and its guard relatively to one another to vary the depth of cut or closeness of shave.
The manner of accomplishing these several advantages and other benefits in accordance with the principles of this invention will be readily understood by those skilled in this art from the following detailed description of a preferred and desirable embodiment of the invention illustrated in the several views of the accompanying drawing, forming a part of this specification, and throughout the figures or views of which like reference characters refer to the same parts.
In this drawing:
The appliance includes a round, elongated, hollow handle
The flat, round, disc, sharp-edged blade
Externally, the blade is covered by a circularly-corrugated, convex face-plate
To adjust the position of the blade-support, the blade, and its associated face-plate, the razor includes a threaded rod
The screw-threaded connection between the parts
As has been clearly indicated, the pin
To normally prevent the blade-holder from being detached from the razor during adjustment as described, but yet permitting its intentional removal, the following described construction is provided. The block
Although in this application only one desirable embodiment of the invention has been presented, it will be understood by those skilled in this art that it is susceptible of a variety of embodiments and is, therefore, not limited or restricted to the precise and exact mechanical details of structure illustrated and described. Stated somewhat differently, the appliance presented may be more or less modified in structure without departure from the substance of the invention and without the sacrifice of any of its substantial benefits and advantages.
I claim:
1. In a razor of the character described, the combination of a hollow handle fitted with a blade-guard at one end, a blade-support having a grooved stem in said handle, a grooved member in said handle having a beveled end wall, a split spring-ring in said grooves, and an adjustable retainer having threaded engagement with said stem and having an accessible head by which it may be turned, substantially as described.
2. In a razor of the character described, the combination of a hollow handle fitted with a blade-guard at one end, a blade-support having a grooved stem in said handle, means to prevent turning of said blade-support, a grooved member in said handle having a beveled end wall, a split spring-ring in said grooves, spring means tending to move said blade-support axially, and an adjustable retainer having threaded engagement with said stem and having an accessible head by which it may be turned, substantially as described.
3. In a razor of the character described, the combination of a hollow handle fitted with a blade-guard at one end, a blade-support having a grooved stem in said handle, means to prevent turning of said blade-support, means to prevent turning of the blade on said support, a face plate for the blade having detachable threaded engagement with said blade-support, a grooved member in said handle having a beveled end wall, a split spring-ring in said grooves, spring means tending to move said blade-support axially, and an adjustable retainer having threaded engagement with said stem and having an accessible head by which it may be turned, the threaded engagement of the retainer with said stem being the reverse of that of the face plate with said blade-support, substantially as described.
Hugo S. Hasselquist.