US833920A

US833920A - Chalk-line holder.

Info

Publication number: US833920A
Application number: US32761206A
Authority: US
Inventors: Albert N Crawford
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-07-25
Filing date: 1906-07-25
Publication date: 1906-10-23
Anticipated expiration: 1923-10-23

Description

l scribed. Arranged in t UNITED sTATns PATENT oFFiofn.

cHALK-LINE HOLDER.

No. 833,920.l

i Specification of Letters Patent.

Patented Oct. 23, 19,06.

Application ned Juiy 2 5, 1906. serai No. 327,612.

Beit known that I, ALBERT N. CRAWFORD, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Chalk-Line.

Holders; and I do declare the following to be a full, clear, and exact description vof the invention, such as will enable othersskilled in the art to which it appertains to make and use the same, reference being had tothe accompanying drawings, and to the figures cf reference markedthereon, which form a part of this specification. y

My .'nvention relates to a new and useful improvement in chalk-line holders; and it consists in the novel arrangement of parts, whereby the line may be brought in contact with a body of-Ichalk, or the supply of chalk may be cut off and the line used for other means, thus serving a double purpose.

In the accompanying drawings, forming a part of this specification, I have shown several detailed views of my invention.

Figure 1 is aA plan sectional view, partly broken away. Fig. 2 is a cross-sectional view of the holder. Fig. 3 is a longitudinal section of a slide-valve in closed position. Fig. 4 isfa similar view of said valve open. Fig. 5 is a sectional view of said valve on line 5 5 of Fig. 4. Fig. 6 shows a modified form of rocker-valve open, and Fig. 7 the same in closed position.

Throughout` the drawings the numeral 1 indicates a receptacle or casing, preferably made in circular form, or it may be constructed in any suitable design, and'inside of this casing, preferably in the center thereof, is arranged a drum 2, having connected therewith at some convenient and suitable point a spiral spring 3 for thepurpose'hereinafter dee periphery of the casing is a circularcompartment 4, extending almost around the ventire casing and separated from theV center or drum chamber by a partition-wall 5. This compartment 4 is intended to hold the powdered chalk that I pro ose using in connection with my device, an as a means for keeping this chalk pushed forward to the feeding-point I have provided a spiral-spring follower 6, whichis located at one end of the compartment 4. A

Arranged-through the casing and compartment 4 is a valve 7, through which passes the 5 end of a line 8, ordinarily wound on the drum 2. The preferred form of feed-regulator which I intend using in my'device consists of a cylindrical rocker-valve 9,-having a cutaway portion in the side thereof exposing the line 8, which passes through the center thereof. This valve can be operated by a crank attachment 10 or any other suitable means.v 4 f 1 The modified form of valve shown consists of an outer shell 11, having a suitable opening 12 therethrough presented to the body of chalk. Operatively seated in this shell is a slide 13, through the center of which passes the line 8 and in which is an open-ing 13, adapted to register with the opening 12 through the outer shell, and thus expose the .line to the powdered chalk when depressed. `A spring 14, bearing againsta iiange formed at the inner end of the slide 13, will automatically close the valve when pressure Iis released on said slide 13.

A filling-opening 15 is provided through 'the casing, controlled by a suitable slide or door arrangement, and as the follower-spring 6 will ordinarily be over this opening I have provided a means for withdrawing or depressing the same when it becomes necessary to refill the compartment. This means consists of a pulling wire or string 16, passing through the spiral spring y6, one end thereof being connected with the pushing-block 17, secured to the forward end of said s ring, and the other end ofsaidpulling-wire eing connected with a spool or drum 18, operated by a suitable crank 19. v

In the operation of my device the compartment 4 is filled with powdered chalk through the opening 15, the follower-spring 6 bein 1pulled away from said opening during the ling process. If it is desired to chalk the line 8, the rocker-valve is turned so that the cut-away portion will be presented to the body of powdered chalk, and thus expose the line 8 to said chalk.l By drawing on said line the same will be chalked along the length desired, and when a vsufficient portion of said line is thus chalked the rocker-valve is reversed and the supply of chalk shut off from contact with the line. Upon releasing the end of said line the spring 3, which has been depressed during the unreeling, will expand and reverse the drum 2, thus automatically winding up the line 8.

IOO

In the modified form of valve when it is de- IIO used for other purposes than for chalking;

but it is ready for instant use as a chalk-line at the will of the operator by the methods above described.

Having thus shown and described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l l i l. In a device of the character described, a suitable casing having a spring-actuated drum located therein upon which is wound a chalk-line; a chalk-compartment formed in said casing; a valve seated through said casing through which passes the chalk-line 5 said l valve at will protecting said line from or eX- posing it to the body of chalk, as, and for, the i purpose set forth.

2. In a device of the character described, a i suitable casing having a spring actuated drum located therein, upon which is wound a chalk-line; a chalk-compartment formed in l said casing; a spring-follower seated at one end of said compartment adapted to bear against the body of chalk, nieans for drawing said spring clear of the filling-opening; a valve seated through the casing through which passes the line g said valve at will protecting said line from or exposing it to the body of chalk 5 as, and for, the purpose set forth.

8. In a device of the character described, a suitable casing having a spring-actuated drum located therein, upon which is wound a chalk-line; a chalk-compartment formed in said casing; a spring-follower seated at one end of said compartment adapted to bear against the body of chalk; means for drawing said spring clear of the filling-opening; a rocker-valve seated through the casing through which passes the line and having a cut-out portion formed therein for exposing said line to the body of chalk 5 as and for, the purpose set forth.

In testimony whereof I ai'IiX my signature in presence of two witnesses.

ALBERT N. CRAWFORD.

Witnesses BEATRICE FITZGERALD, J, I. APPLEMAN.