US1557528A - Splitting jack for glass cylinders - Google Patents

Description

Oct. 13,1925. 1,557,528

J. H. HOWARD SPLITTING JACK FOR GLASS CYLINDERS Filed March 11, 1925 INVENTOR.

J06 1i. flan (2rd,

' I ATTORNEYJ invention in Patented Oct. 13, 1925.

UNITED STATES v 1,557,528 PATENT OFFICE.

SPLITTIN G JACK FOR GLASS CYLINDERS.

Application filed March 11, 1925. Serial No. 14,599.

To all whom it may concern:

Be it known that I, Jon H. HoWnRD, a citizen of the United States, residing at Okmulgee, in the county of Okmulgee and State of Oklahoma, have invented a new and useful Splitting Jack for Glass Cylinders, of which the following is a specification.

The object of my invention is to provide means by which the upper port on of a glass cylinder may be supported during the spiltting of the cylinder.

he accompanying drawing illustrates my use within a. glass cylinder.

In the drawing 10 indicates a splitting buck of any desired form upon which a glass cylinder 11 may be supported.

The splitting of cylinders of this klnd is accomplished either by the use of a hot iron, or a cutter, and when the split occurs there is generally an automatic overlapplng of the freshly formed edges, due to the internal tension of the cylinder.

In the case of single strength glass it is generally not necessary to support the up per regions of the cylinder at the t1me of split, but in case of double strength cylinders it is not unusual, if the upper regions are not supported at the time of split, for the cylinders to crack lengthwise in the up per regions.

In order to avoid this difficulty, while at the same time avoiding any interference with the splitting operation, I have provided the jack shown in the drawings, said jack comprising a lever 12 articulated with a standard 13, the standard being so formed at its lower end that it will contact with the cylinder to one side or the other, or both, of the lowest part of the interior of the cylinder, leaving a region longitudinally of the cylinder, at its lowest point, free for the application of the splitting iron or splitting tool.

Most conveniently, standard 13 is formed ly spaced feet 14, 14.

find it also most convenient to articulate the standard with the lever so as to form a short arm provided with a padded the lower end of the into a pair of lateralhead 15 adapted to engage the upper interior of the cylinder without scratching, and a longer arm of formed at its end so as to be conveniently grasped by the hand of the operator.

In use, a cylinder having been placed upon a buck, the jack man places the jack within the cylinder as indicated and holds the outer end of the lever 12 so that the padded l 15 will engage the interior of the cylinder near the middle of its length, the feet 14 straddling the lowest line of the cylinder. The splitter, operating from the op posite end of the cylinder, then inserts his splitting iron, or splitting tool, moving the same between arrangement being such that, when the split occurs, the jack man may support the upper regions of the cylinder and prevent cracking at that point.

Owing to the articulation between the lever and standard, the jack is readily placeable in position, readily adjustable to sizes of cylinders, and readily usable. It is most conveniently made of wood.

I claim as my invention:

litting jack for lated therzwith upon an axis transverse to the length of the lever, said lever having one end adapted to enga e the upper 5 interior of the glass cylinder and the other end adapted to be engaged by the hand of an operator.

2. A splitting jack for glass cylinders comprising a standard having laterally separated feet and a lever articulated therewith upon an axis transverse to the length of the lever, said lever having one end adapted to engage the upper interior of the glass cylinder and the other end adapted to be engaged by the d of an operator.

In witness whereof, I Jon H. HOWARD, have hereunto set my hand at Okmulgee, Oklahoma, this 7th day of March, A. D. one thousand nine hundred and twenty-five.

JOE H. HOWARD.

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