US777346A - Combined chalk holder and sharpener. - Google Patents

Description

PATENTED DEC. 13, 19%

Non 777,846.

B 'KRAUS @z A. LINKS COMBINED CHALK HOLDER AND flAfiPENEfi.

APPLICATION FILED JULY 25,1904.

N0 MODEL.

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ll rrn STATES Patented December 13, 1904.

11;: FM e l BENJAMIN KRAUS AND ADOLPH LINKS, OF SAN FRANCISCO, CALIFORNIA.

SPECIFICATION forming part of Letters Patent No. 777,346, dated December 13, 1904. Application filed July 25, 1904:- Serial No. 218,162. (No model.)

To all whom it may concern:

Be it known that we, BENJAMIN KRAUs and AnoLPH LINKS, citizens of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in a Combined Chalk Holder and Sharpener, of which the following is a specification.

Our invention relates to a combined chalk holder and sharpener for the use of tailors and others.

The object of the present invention is to provide a simple, handy, and practical device which will combine a chalk-holder and a means for sharpening the chalk and retaining the shavings or chalk-powder, so that the latter will not get upon the hands or be scattered over the cloth and table.

The invention consists of the parts and the construction and combination of parts, as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure 1 is a section through our device. Fig. 2 is a plan view of same with part of sharpener and cap broken away.

As here illustrated, A A represent two thin spring-metal plates suitably secured together intermediate of their ends and adapted at one end to removably hold a chalk or marker, as 2, and provided at the other end with means for giving the marking edge of the chalk a suitable ti-shaped bevel. The chalk-holding end of the plates form two cooperating springactuated jaws adapted to be separated by convenient means, as the headed studs 3, one of which is secured. to the inside of one jaw and projects through a hole or slot in the opposite jaw, and the other is secured to the inside of the last-named jaw and projects through a hole or slot in the first-named jaw. A simultaneous pressure on the external heads t of the studs causes the jaws to open to receive or release a piece of chalk. The jaws are suitably serrated or slotted, as shown at 5, to afford gripping means for the chalk. As here shown, the front and rear edges of the slot are turned in and sharpened and made slightly convergent, so as to grip each side of the chalk along two separated lines, the rear gripping edge 6 operating to prevent the chalk being slipped or pressed into the holder, the front gripping edge 7 serving to prevent the outward withdrawal of the chalk, and the two coacting to prevent twist or wabbling of the chalk when the holder is in use.

Ordinarily when the chalk needs sharpening, as it frequently does, it is customary for the tailor to use his knife, holding the chalk in one hand and soiling his lingers with the shavings resulting from the sharpening and scattering the shavings and chalk-powder over the cloth, the table, and the lloor. \Ve have arranged our device so that one end will serve as a chalk'holder and the other as a sharpener. WVhile various constructions are possible embodying this idea, the present arrangement shows two flared thin plates 8, removably clamped between plates A A and having the transverse inclined cutting edges 9, with slots opening through into the lateral troughs 10, formed between each of the plates 8 and the adjacent ends of platesA A. The four plates comprising the sharpener lie in different radial planes, and the sides of the outer plates at the ends of the sharpener are turned in, as at 11, to close the ends of the troughs and more securely retain the contents of the troughs. These troughs or shavings-receptacles are designed to hold the shavings from the chalk when the latteris being sharpened, and thus prevent them from being scattered pron'iiscuously about. To sharpen the chalk, the operator inserts the end of the chalk into the space included between the abrading-platcs 8 and by a few reciprocations of the chalk pro duces the desired wedge-shaped edge. The plates 8 in fact constitute a V-shaped guide provided with abrading means. IIaving held the sharpener upright during the sharpening operation, the chalk powder collected in troughs or receptacles 10 is emptied into a waste-basket or other depositary by simply inverting the sharpener.

To protect the protruding end of the chalk in the holder and prevent its being accidentally broken, there may be provided a cap in the form of a spring-clip 12, adapted to slip over the exposed end of the chalk and grip the jaws of the holder. If desired, the sides of this cap or protector may be indented inwardly, as at 13, corresponding to the slots 5,

so that when the cap is over the chalk and in position on the holder the indented portions will engage the part of the chalk ordinarily exposed in the slots 5, and so keep the cap from easily coming off.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

1. A device of the character described comprising separate bent plates united near one end to form a V-shaped guide said guide provided with abrading means and the opposite portions of said plates being prolonged beyond their point of connection.

2. A device of the character described comprising a pair of plates united near one end and having said end flared and provided with abrading means. i

8. A chalk-sharpener comprising a pair'of plates united near one end and having an extended V-shaped guide with transversely-arranged knives on its inner surfaces, said guide having openings proximate to said knives to allow the chalk-shavings to pass through, and receptacles exterior to the guide and rigid therewith to collect and hold the shavings from said openings.

A. A sharpener for tailors chalk and the like comprising a pair of plates united near one end, said end having a guide approximately V-shaped in cross-section and provided with cutting edges on its adjacent surfaces, the

walls of said guide slotted proximate to said cutting edges to permit egress of the chalk and shavings, and receptacles practically coextensive With the cutting area of the guides arranged exterior to the guides to receive the shavings discharged through said slots.

5. A sharpener for tailors chalk and the like comprising four plates rigidly united and flared to lie in different radial planes, the inner of said plates slotted and provided with opposed cutting edges and the outer of said plates coacting with the inclosed plates to form troughs or receptacles for the receipt of the detritus from said cutting edges.

6. A device of the character described comprising two spaced plates connected intermediate of their ends and diverging from the point of connection in opposite directions, one of said diverging ends provided with chalksharpening means.

7. A device of the character described comprising a pair of spaced plates connected intermediate of their ends said plates having transverse slots and the edges of the slots inturned, and a cap fitting over the plates and having means to interlock with said slots.

In testimony whereof we have hereunto set our hands in presence of two subscribing Witnesses.

BENJAMIN KRAUS. ADOLPH LINKS. Witnesses:

SAMUEL RosENHEnI, S. H. Nonnse.

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