US1327154A - Compass - Google Patents

Description

C. F. GOLDEN.

COMPASS.

APPLICATION FILED .MAR. 22. 1919.

1,327,154. I Patented Jan 6,1920.

WW1 co v d UNITED STATES PATENT OFFICE.

CHARLES FREMONT GOLDEN, 01? DENVER, INDIANA.

COMPASS.

Application filed March 22, 1919.

To all whom it may concern:

Be it known that 1, CHARLES F. GoLonN, a citizen of the United States, residing at Denver, in the county of Miami and State of Indiana, have invented a new and useful Compass, of which the following. is a specification.

My invention relates to compasses and embraces improvements in my prior Patents Nos. 1188644 and 1266010.

The primary object of the invention resides in the provision of a compass and marker, the same being particularly adapted to the construction shown in the patents above mentioned.

It is another object of the invention to provide a device of the above character which is adjustable to any position on the straight edge (the straight edge forming part of the construction disclosed n my prior patents) so that clrcles of different radii may be drawn.

Another object of the invention is to provide a marking device which is mounted on the straight edge so that it may be moved the entire length of the same to draw straight lines or mark :points along the straight edge. I

An additional object of the inventlon is to provide a compass having the above features which is simple in construction consists of few parts that may be readily assembled and disassembled, and which may be manufactured and sold at a mlnimum cost.

Other objects and advantages of the invention will become apparent from the following description and accompanying draw- In the drawings:

Figure 1 is an elevation of my improved compass.

Fig. 2 is a longitudinal sectional view taken on line 22 of Fig. 1 and Fig. 3 is a transverse sectional view on line 33 of Fig. 1.

Referring in detail to the drawing the numeral 5 designates a graduated disk which constitutes a protractor and which carries a spring pressed centering point 6. In stamping out the device, the disk is formed with slits which are widened to provide slots 7 The bar 8 or straight edge is the continuation of the point between these slots 7 and extends radially from the protractor or Specification of Letters Patent.

Patented Jan. 6, 1920.

Serial No. 284,294.

disk 5 at a point near its center. The bar 8 is of channel formation, its side edges being disposed at an oblique angle so that the. graduations thereon are readily visible; A longitudinal slot 9 extendsthe lengthof the bar.

The marker carrier comprises a metal slide 10 which is formed with a pointer that moves along the graduated surface of the bar. The metal strip from which the slide is formed extends vertically and then bent inwardly and disposed above the straight edges. The latter part of the metal strip terminates in an enlargement 11 having an opening 12 therein. Slidably mounted upon the under face of the straight edge and beneath the slot 9 is a clamping plate 13 which carries a threaded stem 1 1 which extends through the slide 10 and has a nut 15 threaded thereon.

Threaded in the opening 12 in the enlargement 11 is a barrel 16 in which a hollow cone shaped member 17 is mounted and which projects downwardly from this barrel. Disposed in this member 17 is a lead holding tube 18 and the lower end of which is formed with lead gripping fingers 19. An expansible coil spring 20 encircles this tube 18 and bears against a threaded bushing 21 through which the tube 18 projects and has a nut threaded upon.

While I have shown and described the preferred embodiment of the invention it is to be understood that the same may be modifled in many respects and that my limits of modifications are only governed by the subjoined claims.

l/Vhat is claimed is:

1. The combination with a straight edge, of a slide marking element holder formed from a strip of metal bent to provide a slide, the slide being mounted for longitudinal adjustment on the straight edge, the metal strip being bent upwardly and thence bent at right angles and disposed above the straight edge, the metal strip terminating into an enlargement a barrel carried by the enlargement and a tube for retaining marking elements carried by the latter.

2. The combination with a straight edge, of a slide marking element holder formed from a strip of metal bent to provide a Slide, the slide being mounted for longitudinal adjustment on the straight edge, the metal. strip being bent upwardly and thence bent at right angles and disposed above the straight edge, the metal strip terminating into an enlargement, a barrel carried by the enlargement, retaining the marking elements carried by the latter, a tube for a cone shaped member projecting from the barrel, a tube carried thereby for retaining the marking elements and provided with gripping fingers at its lower end, and a coil spring encircling the tube and urging the tube downwardly.

3. In a device of the character described a straight edge, a slide longitudinally adjustable on the straight edge, an upstanding member formed with the slide and having its upper end bent at right-angles and terminating in an enlargement which overlies the straight edge and provided with an opening a barrel positioned in the opening and disposed vertically above the straight edge, and means held by the barrel for retaining a marking element in position at the side of the straight edge.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

CHARLES FREMONT GOLDEN.

Witnesses:

NOBLE B. HUNT, RUssEL D. HAINES.

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