US1508674A - Double hardy - Google Patents

Description

J. A. BROWNE DOUBLE HARDY Sept. 16 1924.

Filed Nov. 6, 1923 INVENTOR W I TNESS:

Patented Sept. 16, 1924.

Mr s

TES

PATENT OFFICE. f

DOUBLE HARDY.

Application filed November 7 '0 all whom it may concern: 7

Be it known that I, JosEPH A. BROWNE, a citizen of the United States, residing at Melrose, in the county of Silver Bow and State of Montana, have invented a new and useful Double Hardy, of which the following is a specification. 1 My invention relates to improvements in double hardies for blacksmiths, in which the lower hardy is equipped .with vertical channel bars for the guidance of the upper hardy.

The objects of my invention are to produce a tool which is simple to manufacture; which cuts the metal simultaneously on two sides; which operates with the same ease as a single hardy; and which can be quickly taken to pieces for sharpening purposes.

Other objects and advantages are to be found in the construction and arrangement of parts as will be described in the specification and particularly pointed out in the appended claims.

I attain these objects with the mechanism illustrated in the accompanying drawing, in which- Fig. 1 is a side elevation of the entire hardy;

Fig. 2 is a section through Fig. 1 along the line 2-2;

Fig. 3 is a section through Fig. 1 along the line 33.

Similar numerals refer to similar parts throughout the several views.

The lower hardy 1 consists of a flat rectangular steel plate set on edge, and provided with the customary shank 2 to be inserted in the anvil 3. The upper edge of the hardy is tapered to a cutting edge. Pressed against the vertical ends of the lower hardy are the two channel bars 4, 4 which serve as guide ways for the upper hardy 5. The upper hardy is sharpened at the lower edge, while the upper edge has the corners cut at 6 to allow for brooming during use. A band 7 holds the channel bars to the lower hardy. The band passes through an eccentric 8 having a handle 9, and can thereby be instantly tightened or loosened. A groove 10 in one channel bar holds the band in proper position. The eccentric is prevented from sliding up orv down by a groove 11 in the other channel bar. To give the band 7 a certain amount of elasticity, said band is slightly curved as indicated at 12 in Fig. 1.

6, 1923., Serial No. 673,230.

This elasticity insures a smoother working for the eccentric, and affords a more satisfactory connection under the vibrations to which hardies are usually subjected.

In operation the blacksmith removes the upper hardy, places his iron 13 on the sharp edge of the lower hardy, reinserts the upper hardy, and then severs the iron by the blows of his hammer on the upper hardy.

When the cutting edge of the lower hardy becomes dulled and needs sharpening, the handle 9 is thrown into the dottedposition 14, the channel bars 4 and 4: can'theneasily be. withdrawn and the hardy sharpened in any. suitable way.

It is apparent that damage to the cutting edges of the hardies would result if the latterwere permitted to meet too closely, this is avoided by the introduction of a movable cushioning block 15 in the channel bar 4. The channel bar is provided with a slot 16 and the cushioning block is held in the chan nel by a stem 17 preferably in the shape of a countersunk rivet extending from the block through the slot and carrying on the outside a washer 18. The hardies should have the corners which come in contact with the cushioning block recessed to an amount suflicient to permit approach of the two cutting edges for a complete severance of the interposed iron 13 without actually touching each other. The recesses are indicated by the numerals 19 and20 in Fig. l.

The slot 16 should be long enough so that the cushioning block will adjust itself to hardies of different'heights.

In the foregoing specification a preferred form of construction has been described, it should however be understood that minor changes in detail are considered to lie within the scope and purview of my invention, providing I do not violate the spirit and principle thereof.

I claim:

1. A double hardy, comprising a lower hardy, an upper hardy, channel bars attached to the end surfaces of the lower hardy, and quick-detachable means to hold the channelbars to the lower hardy.

2. A double hardy, comprising a lower hardy, an upper hardy slidably mounted above the lower hardy, channel bars to guide the upper hardy attached to the lower hardy, and an elastic band. encircling the lower hardy and the channel bars.

3. A double hardy, comprising a lower hardy, an upper hardy, channel bars attached to the lower hardy, an elastic band encircling the channel bars and the hardy,- and an eccentric inserted in said band and pressing said channel bars against the lower hardy, whereby said channel bars can be quickly attached or removed.

111 a double hardy, the combination of two vertically disposed hardies having their cutting edges turned toward each other, with quiclcdetachableguiding means for the upper hardy attached tothe lower hardy, and a cushioningblock between the two hardies.

5. In a double hardy, the combination of two vertically disposed hardies having their cutting edges turned toward each other, with vertical channel bars attached to the end surfaces of the lower hardy toflguide the upper hardy, an elastic band BIlClICllng the lower hardy and the channel bars, and a cushioning block between the two liardies.

6. In a double hardy, the combination of two vertically disposed hardies having their cutting edges turned toward each other, with'vertical channel bars attached to the end surfaces of the lower hardy, a band .e'ncircling the lower hardy and the channel bars, an eccentric cooperatively connected with the band to tighten or loosen said channel bars, and a cushioning block between the two hardies.

7. In a double hardy, the combination of two vertically disposed hardies having their cutting edges turned toward each other,

cutting edges turned toward each other,

with quick-detachable channel bars to guide the upper hardy attached to the end surfaces of-the lower hardy, one of said channel bars having a longitudinal slot in the web, a cushioning block slid'ably mounted in the channel of the channel 'bar, a washer, and a stem extending through said slots-between cushioning block and washer, the cutting edges of the hardies adjacent to the cushioning blo'clr being recessed for the reception of said cushioning block.

Si-g i'ied by me at Mel rose, Montana, this 24th day ofOctober, 1923. v V v JOSEPH A. BROWNE.

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