US1296661A - Device for splitting glass. - Google Patents

Description

H. F. HITNER,

DEVICE FOR SPUTTING GLASS.

APPLICATION FILED JUNE 26.19l6.

1,296,66 l. Patented Mar. 11,1919.

WITNESS;

- HARRY r. EITHER,

or mounzr- VERNON, OHIO, AssIenoa TO rrr'rsnnnan PLATE. crass comrm, A. conrom'rron or PENNSYLVANIA.

DEVICE FOR SPLITTING- GLASS.

Specification of Letters Patent.

Patented Mar. 11, 1919.

Application filed June 26, 1916. Serial No: 105,926.

To all who m it may concern ,Be it known that I, HARRY F. HITNER,'a

citizen of the United 'States, residing at Mount Vernon, in the county of Knox and State of Ohio, have invented a certain new and useful-Device for Splitting Glass, of

which the following is 'a specification.

The invention relates to a means adapted for splitting glass, and particularly glass ofconnection involving the use cylinders, by electricity. It has for its principal objects, the provision of a device (1) having improved means for making the contacts with-the thin band or splitting ribbon of high. resistance material employed, and one in which the burning in two of the band at these points is prevented, (2) having an improved and simplified wiring arrange- I merit and (3) having an improved means for preventing short bends and consequent breaking of the supply wires. One embodiment of the invention is illustrated in the accompanying drawings, wherein- Figure 1 is ,a side elevation of the device;

Fig. 2 is a p rtial side elevation on an enlarged scale 0 the connecting means at one end-of the device; and Figs. 3, 4, 5 and 6 are sections. on the lines III-III, -IVIV, VV and'VIVI of Fig. 1.

' Referring to the drawings, 1 1s the framework of the device having an operating portion 2 at one end and a handle portion 3 at -6 carries a contact block 8, preferably of brass or similar material, held in position by means of the screws 9. The block 8 isprovided with a transverse groove 10 adjacent its forward end, and the end of the band 5 is clamped in this groove by the pointed end 7 of the spring 6. I have found this method of the groove and the pointed clamping end of great advantage since the contact thus provided is most efiective and the burning off of the ribbon at this point is avoided. The spring tion,

6 serves to apply any desired amount of tenslon to the band 5.

The right-hand end of the band is clamped against a block 11 by means of a spring 12 and a pair of screws 13 and 14, the block being grooved and the method of connection being the same as that just described and illustrated in connection with Fig. 2. The block 11 is held in position by means of the stud 15 and nut 16 (Fig. 4) and.

the block, stud, and nut insulated by the.

members 17 18 and 19, as shown in Fig.4;

The handle portion of the frame is-pro vided with a pair of terminal blocks 20 and 21 to which the wires of the cable 22 are ,attached by means of the screws 23 and 24. The block 21 is held .to the handle portion by the stud 25 and is'grounded on the framework so that current supplied at this point flows through the framework to the block 8 at the left-hand end of the framework. The other terminal block 20 is secured in position by means of the stud 26 and nut 27 and is insulated from the handle portion 3 by means of the members28, 29 and 30, as illustrated in Fig. 5. This insulated terminal block 20 is connected by means of the wire 31 (Fig. 1) with the other'insulated block 11 (Fig. 4) lying at. the right-hand end of the splitting ribbon 5.

It will be seen that thev foregoing constitutes a simple wiring arrangement, since allv that is necessary is the insulation of the blocks 11 and 20 and their connection by means of the wire 31, the other electrical connections being provided by grounding the blocks 8 and 21 upon the metal framework. 5

Secured to the handle portion 3 of the framework is the guard member 32 having its end 33 opposite the terminal blocks 20 and. 21 and provided with a perforation 34 for the passage of the cable 22. This guard is preferably made of U-shape in cross-secas indicated in Fig. 6, and is held in place by means of the screw 35. This member protects the wires against breakage at their points of attachment to the terminal blocks 20 and 21 since the portion 33 of the guard allows only a slight backward and forward movement of the cable, the principal bending occurring in the cable at the point 36, and such curve is much less abrupt than that which occurs where the wires are secured to the terminal blocks.

What I claim is: 1. In an electrical splitting device, a sup port, a metal terminal block carried thereby,

a high-resistance band adapted to be heated electrically to arelatively high temperature, means for securing one end of the band to the block, means for securing the other'end of the-band to the support, a contacting surface on the block intermediate the points at which the band is secured, and means for applying tension to the band to hold it in engagement with said contactingsurface.

2. In an electrical splitting device, a metal terminal block carried thereby, a highresistance band adapted to be heated electrically to a relatively high temperature, means for securing the band to the block, a contact surface on the'blockvover which said band 'is bent and lying between the means for securing the band to the block and the other end of the band, and means for applying tension to the band to hold the bent portion in engagement with thecontaet surface.

3. In an electrical splitting device, a

1 metal terminal block, a springcarrying said block, a high resistance band adapted to be heated electricallyto a relatively high temperature, means for cl 'mping the end of the band to theblock, an i a contact surface on the block engaging j'hid band, and lying between said clamping means and the other end of the band, said spring being arranged to apply tension to the band to hold it in engagement with the contact surface.

4. In an electrical splitting device, a metal terminal block provided intermediate its ends with a transverse groove, a high resistance band fixed at one end and having its other end extending across the groove, a clampingedge for forcing the band into the groove, and means for yieldingly forcing the block awayv from the fixed end of the band to cause the band to yieldingly en- I gage the block in advance of the clamping band into said groove, the said band yield ingly engaging the block intermediate the groove and the other end of the band,

whereby overheating of the edge and the band at the point of bending is avoided.

6. In an electrical splitting device, a ter-- minal block of meta] having a transverse groove, a fiat hlgh resistance band having its end extending transversely across the groove, and a spring clamping means for carrying the block and for applyingtension to theband and having a pointed edge for engaging the band opposite the groove.

7. In an electrical splitting device, a terminal block of metal having a groove, aflat high resistance band fixed at one end and having its other end extending transversely across the groove, and a spring clamping means for carrying the block and for applying tension to the band and having a pointed edge for engaging the band opposite the groove, the said band being bent over a part of the block in advance of the said edge.

HARRY F. HITXER.

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