US 1664875 A
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Description (OCR text may contain errors)
Patented pr. 3, 1928.
UNITED STATES SAMUEL K. COWAN, OF NEW YORK, N. Y.,
ASSGNOR TO COWAN LATH BOARD GOM- PANY, 0F NASHVILLE, TENNESSEE, A CORPRATION OF TENNESSEE.
Application filed July 18,
This invention relates to an improvement in laths.
This invention saves in the cost or construction, saves building materials, and the time of the workman, and makes the workmans labor less ditlicult and increases his eliciency. It results in a stronger and more durable wall structure, effects a saving in plaster, studding, and other material, and can be nailed in place by unskilled labor.
This invention consists of a board of suitable proportions having staggered slits or slots extending longitudinally thereof, enlarged on the inside surface to receive the key formed in the plaster as it isforced through the slits or slots by the plaster-er.
In the accompanying drawings Fig. 1 is a plan view;
Fig. 2 is an enlarged cross sectionalview; and
Figs. 3 and Il show slightly modilied forms in the slot.
A, is the board. This may be made in different lengths, widths and thicknesses, accordingto the Work, thinner for plaster, and slightly thicker for stucco work.V Slots or slits l are cut longitudinally in the board With spaces between and in staggered arrangement.
Thesel slits or slots, 1, are made wider on the inner surface as shown at 2 in the different figures of the drawing to aiford space for the key that is formed by the plaster which is applied in the usual way, thus holding .it securely and making a firm, solid and durable plastered surface.
By starting the outside slits or slots in from the edges, no skill is required in nailingthe boards to the wall or ceiling, as they are placed close together, or edge to edge.
A lath of this character has openings of uniform width and presents a smoother and more uniform surface upon which to work, effecting in both instances a saving in plaster, and creating a more durable Wall because of the key formed in the enlarged areas at the back of the slits or slots.
Obviously the shape of the edges of thesev vslots might be varied indefinitely, so long as 1924. Serial No. 726,801.
they are always larger on the inside surface than they are on 'the outside, thus forming the lock and key forthe plaster.
Lathe of this description can be sawed uniformly and cheaply, thus making it altogether practical as a building accessory.
A lath of this form will make serviceable and of value parts of lower grades of lumber now destroyed in slab-pits at saw-mills because of defects not objectionable in the plaster or stucco 'frame or board created; thereby conserving a nninufactured material.
A lath having longitudinal saw slits or slots wider on one side than the olhcr creates a practical wooden frame or board 'for plaster, stucco, and other materials, that retains the advantages in construction of the single, separate lath now in general use, yelmakes a saving in the cost of construction and building materials, saves the time of the Workman and makes his labor less diliicult and increases his cliiciency, and i'nalws a stronger and more durable wall structure.
l claim l. An article of the character described made from a board having a plurality of elongated and substantially parallel saw kerfs cut entirely through the board in staggered relation and lengthwise thereof simulating a plurality of laths in a board, the front side of each saw kerf having the side edges thereof extending approxin'ialely at right angles to the face of the board, and the back side of each saw kerf being wider than the front side. l
2. An article of the character described made from aboard having a plurality of elongated and substantially parallel saw kerfs cutl entirely through the board lengthwise thereof simulating a plurality of laths in a board, the front side of each saw kerf having the side edges thereof extending approximatelyY at right-angles to the face of the board, and the back side of each saw kerf being wider than the front side.
lin testimony whereof I atliX my signature.
SAMUEL K. COWAN.