US2550765A

US2550765A - Ice skate sharpener

Info

Publication number: US2550765A
Application number: US138172A
Authority: US
Inventors: Charles W Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1950-01-12
Filing date: 1950-01-12
Publication date: 1951-05-01
Anticipated expiration: 1968-05-01

Description

May 1, 1951 c.'w. BROWN ICE SKATE SHARPENER Filed Jan. 12; 1950 IN VENTOR ATTORNEYS- Patented May 1, 1951 UNITED STAT ,"rsm orr cs 1 Claim.

This invention relates to a sharpening device for ice skates.

The invention has for its main objects the provision of a sharpening device that will be inexpensive; durable; small size; adapted for application to all sizes of blades; and so formed as to cause the blade to be hollow ground.

To this end, the invention, summarized briefly, comprises an inner shell formed from a cylindricalpiece of metal tubing; an outer shell of somewhat larger diameter in which the inner shell is positioned and rigidly secured, the outer shell being split at a location diammetrically opposite the point of connection between the shells, to provide guides for a skate blade inserted through the split portion, said outer shell also having a pair of longitudinal slots disposed on opposite sides of the guides; and an abrasive sheet inserted through the slots and positioned between the inner shell wall and the edge of the blade to he sharpened, the device adapted to be rubbed up and-down lengthwise of the skate blade.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing Fig. l is a perspective view of a sharpening device formed in accordance with the invention.

Fig. 2 is an enlarged view partly in side elevation and partly in longitudinal section.

Fig. 3 is a transverse section taken on line 3-3 of Fig. 2.

Referring to the drawing in detail, I provide an inner shell 5 which can be cut simply from a length of metal tubing. At suitable intervals longitudinaly of the inner shell, the inner shell is rigidly secured by rivets 2 to the wall of the outer shell 3 which, as seen from Fig. 3, is of somewhat larger diameter than the inner shell 2, thus to space the walls of the shells apart a suitable distance at a location diametrically opposite the points of fixed connection 2, said space between the shell walls constituting a space within which is received a blade B of an ice skate for sharpening of the blade.

Diammetrically opposite the rivets 2, provision is made for this blade-receiving space by forming the outer shell 3 as a longitudinally split cylinder, the side edges of the slit made in the outer shell. being outturned to provide longitudinal guide flanges adapted to be sprung apart as necessary to receive between them'jand grip frictionally blades B of any width.

Formed in the outer shell 3 are the closed longitudinal slots 5, the material resulting from the punching of these slots being bent inwardly to form instruck spacer strips 5. The slots 5, in this connection, are parallel to the guide flanges 4 and blade-receiving space between said flanges, and are respectively disposed on opposite sides of said space.

The spacer strips 6, as will be observed, engage the wall of the inner shell l andcause the guide flanges d to be spread apart to define a minimum blade-receiving space which can be enlarged as necessary merely by springing said flanges apart to receive blades B of greater width.

Referring to Fig. 3, a piece of abrasive cloth is new inserted through the slots 5, so as to be positioned between the inner shell I and the edge of the blade B. The sharpener is now rubbed up and down the skate blade, with the result that the blade is hollow ground against the curved surface of the inner shell.

As will be apparent, the cloth I is replaced whenever desired, and provides a very inexpensive abrasive surface, with the user being given a wide choice of type of abrasive and grain size.

What is claimed is:

An ice skate sharpener comprising an outer shell having a longitudinal slit extending from end to end thereof, the side edges of saidv slit being outturned to provide longitudinal guide flanges adapted to grip frictionally the side surfaces of an ice skate blade inserted therebetween, there being closed longitudinal slots formed in the outer shell and respectively spaced from opposite sides of the blade-receiving space defined between the guide flanges; an inner shell of a diameter substantially less than the diameter of the outer shell'and rigidly secured to the "outer shell at a location. diammetrically opposite said slit; spacer strips extending longitudinally of the respective slots, said strips being integral with the outer shell and being extended substantially radially and inwardly from the outer shell, said strips engaging the inner shell to space the inner shell and outer shell apart to define a minimum bladereceiving space between the guide flanges; and an abrasive strip underlying the inner shell above said slit and removably inserted between the slots for grinding of said blade.-

CHARLES W. BROWN.

REFERENCES CI ED 7 The following references are'oi record in the file of this patent:

UNITED STATES PATENTS