US1451409A - Carpet-rag looper - Google Patents

Description

Apr. l0, 1923.

M. A` SEARS CARPET RAC- LooPER Filed- Aug. 24, 1922 ATTQRNLY@ Patented Apr. l, i923.

wire I clerics- MARY A.. SEARS, OF LOS ANGELES, CALIFORNIA.

CARPET-RAG LooizeER.

Application filed August 24, 1922. Serial No. 554,026.

To aZZvwmm t may concern:

Be it known that I, MARY A. SEARS, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented anew and usefulImprovement in Carpet-Rag Loopers, of which the following is aspecification.

My invention relates to a device forv length-wise slitting the ends offstripsof Fig. 3 is a cross section onthe line 3 3 in Fig. l.

Fig. 4 is guard. `The a perspective view of the blade device comprises a blade 2 of very thin metal, such as steel, the sides of which are tapered smaller fronithe base upward, and adjacent the top form an acute angle 3, the containing sides of which areA sharpened to cutting edges. The body of this blade 2 is medially apertured as at 4.

On each side of this aperture 4 the metal is stamped from one side to form two ridges 5 by which a measure of rigidity is imparted to the thin and otherwise too iexible blade.

At the base, portions 6 are outwardly turned to opposite sides to form feet by which the blade may be secured by screws in a substantially upright position to a base 7. This base may be of any convenient size or shape but is preferably circular and fits within a shouldered recess in the cavity 8 of a base block 9. The central space of this block is sufiicient to conveniently receive and protect the blade when the circular base 7 is inverted.

This base block forms no material part of the invention, but is a'convenient attribute thereto.

In use, one end of a strip of rag or cloth is placed lengthwise over the sharpenedv point 3 of the blade, and is pressed downwardly thereon until the aperture 4 is revealed above it. The end of the strip to be connected is in the same manner placed over the blade and downwardly pressed to reveal the aperture. Thereafter the further end of the first placed strip is passed through the aperture 4, and together the two slit ends are withdrawn from the blade, and the free end that was inserted through the aperture 4 is thereby drawn through the slits in the n ends of the pieces to be lconnected and when drawn tight securely loop the two pieces together.

No claim can, however, be made on this manner of slitting and connecting the ends of strips as described, as I know that to be old in the art, as also is the sharp pointed and apertured blade by which the slitting is effected. l

The substance of this invention resides in the particular construction of the. blade,` whereby it may be made of very thin material on which a-.cutting edge may be`easily maintained, and in the lengthwise groove or ridges 5 by which the required rigidity is imparted to this thin blade which is necessarily weakened by the aperture 4.

It also resides in the simple and convenient means by which the blade is connected to the base 7 bythe two feet 6 cut from then material and turned to opposite sides, where- -by a more effective support is afforded to the thin material which the blade is made from,

to maintain it in the upright position.

If made of a material thick enough to maintain the required rigidity, the sharpening of the blade is troublesome as it can onlyy be done by grinding. When, as in this case, the blade is of very thin material, it is easy to maintain the necessary sharp edges on it and with such thin material the required rigidity is imparted by the grooves or ridges .Where the blade is used on a base that is not adapted for use with a base block 9, itsv cutting edge may be guarded by a member l0 of thin sheet metal, the edges of which are folded over as at ll, to fit on the taper ofthe main body of the blade?, below the cutting edge 8, and is produced upwardly beyond the acute angle of the cutting edges 3.

I claim as my invention:

l. As an article of manufacture, a rag slitl cent the base, and means for securing said blade to a base.

2. As an article of manufacture, arag slitting blade of thin sheet metal, the width of which blade tapers smaller from adjacent the base to an acute angle at the top, the sides of which acute angle are sharpened to cutting edges, said blade mcdially apertured from adjacent the base of the acute angle downward, the metal being stamped to form a ridge on each side of the medial aperture and means for securing the blade to a base, said means comprising feet eut and bent to opposite sides from the body of the blade.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 18th day of August, 1922.

MARY A. SEARS.

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