US1028720A - Marking gage or tram. - Google Patents

Description

J. W. HASBURG.

MARKING GAGE on TEAM. 4 I APPLICATION FILED JATILQZ'I, 1912. 1 028,720. Patented June'4, 1912.

COLUMBIA PLANOGRAPH CO" WASHINGTON, D. C-

JOHN W. HASIBURG, OF CHICAGO, ILLINOIS.

MARKING GAGE OR TEAM.

Specification of Letters Patent.

Application filed January 27, 1912. Serial No. 673,717.

To all whom it may concern:

Be it known that I, JOHN W. HASBURG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Marking Gages or Trams, of which the following is a specification.

My invention relates to improvements in marking gage or tram.

One of the objects of my invention is to provide a convenient simple tool especially adapted for use of china or ceramic decorators.

Other and further objects will become apparent to persons skilled in the art from a consideration of the following descrip tion taken in conjunction wherein Figure 1 is anelevation of the device; Fig. 2 is a plan view thereof; Fig. 3 is an enlarged broken-away part of the device in vertical section; and, Fig. 4 is a similar view showing a pin or pointed tool in the chuck.

In all of the views the same reference characters are used to designate similar parts.

The beam or bar 5 is slotted at one end, as at 6, said slot terminating in abore 7 thereby to render the prongs 8 and 9 more resilient. The bifurcated end is tapered and screw threaded, as at 10, thereby forming one element of a chuck. A head 11 is correspondingly tapered and threaded at 12, so that when the head is screwed on to the ends of the bar 5 the prongs 8 and 9 are drawn closer together. Between the bore 7 and the ends of the prongs is another bore 13. A split tube 14 neatly fits the bore 13 and may contain a pencil lead .15 or other marker. The marker 15 fits neatly into the split tube 14 and is adjustable vertically therein when the head 11 is not screwed .up to its fullest extent upon the prongs 8 and 9.

The head is bored centrally, as at 16 to receive a scribe or pin 17. The pin may be with the drawings passed through the head 11 and into the slot 6 so that when the head is screwed up on the prongs the pin 17 will be held in a central position and its inwardly projecting end will be clamped between the prongs 8 and 9, as shown in Fig. 4. In this case the marker may be removed from the split tube 14 so as to permit greater latitude and freer movement of the prongs 8 and 9 to better clamp the pin 17.

When the split tube 14 is within the bore and the chuck head 11 is screwed tight on the end of the bar 5 the prongs are drawn toward each other,'thereby contracting the split tube and clamping the marker 15 tightly therein at any selected vertical position.

A head 20, provided with a point 21' is perforated, as at 22, and is slidable along the bar 5 and may be fixed in position by the set screw 23. I

By means of my improved tool the center of a dish or other disk may be quickly obtained; marginal boundaries may be readily defined and circles may be described,whilc the prick-point 7 may be used for various purposes.

What I claim is:

A tool of the class described comprising a bar tapered and screw threaded at one end and bifurcated by a slot at said end, said slot terminating in a bore larger in diameter than the slot, a split tube for holding a marker, said bar having another bore in said slotted end parallel with the first said bore, and a tapered, screw-threaded head having a tapered screw-threaded perforation for engagement with the threaded end of said bar and a smaller central perforation for insertion of a scribe pin.

. In testimony whereof I hereunto set my hand in the presence of two witnesses.

JOHN W. HASBURG.

In the presence of- W. LINN ALLEN, MARY F. ALLEN.

Copies of this patent may be obtained for five cents each, by addressing the C0mmissioner-of Patents, Washington, D. C.

PatentedJune4, 1912.

Images