US850945A - Plasterer's trowel. - Google Patents

Description

No. 850,945. h PATENTED APR. 23, 190?.

R. E. MARTIN. PLASTBRERS TROWEL.

APPLICATION FILED DEG.19, 1906.,

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.8 I I a? I I BY ATTORNEY ROBERT E. MARTIN, OF NEWARK, NEW JERSEY.

PLASTERERS TRQWEL.

Specification of Letters Patent.

Patented April 23, 1907.

A plication filed December 19,1906. Serial No. 348,554.

To 00% whom it may concern.-

Be it known that I, ROBERT E. MARTIN, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Plasterers Trowels; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention is intended to provide an improved plasterers trowel which has a longer life than the form of trowel now used and which is also more securely fixed together.

In trowels as now made the plate with which the plastering is done is riveted to its support, w ich support contains the handle, and the result is that the rivet being softer than the steel plate after a while becomes worn and forms an indentation or slight hollow place in the face of the trowel, which causes scratches or ridges when plastering is being done, and, beside, the rivet when it becomes worn away to some extent allows the plate to work loose and have a slight movement, which does not permit a workman to do good work.

My invention is designed to provide a trowel in which the rivets do not come through to the face of the plate, and the plate 1s therefore brazed or soldered to a sec-.

ond plate much narrower and slightly shorter than the plate with which the plastering is done, which second plate is riveted to the support of the handle, and this structure makes up a device that is not apt to tear. apart on account of the flexibility of the second or reinforcing plate.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side view of the improved trowel, partly broken away at one point. Fig. 2 is a top view of the same, and Fig. 3 is a section on line 3 3 in Fig. 1. p

I use in my trowel a support having a vertical shank 10, which has the arms 11 extend ing on the front and the back, as is usual in trowels of this kind, and I secure to these arms 11 of the support a strip 12', which is considerably wider than the narrow arms 11, and I secure these parts together preferably by means of the rivets 13. To the strip 12 is secured, preferably by brazing, a plate 14, which presents a smooth surface on its face, being without any rivet-heads or any indentations or projections whatever, and the plate is in condition to wear evenly over its whole surface. If the plate 14 were brazed directly to the arms 11 of the support, the arms 11 in trowels are made so narrow that it would be an easy matter to rip the plate 14 away from its supports; but the strip 12 being interposed it is somewhat flexible and acts to take up the bending of the plate 14, and there is no likelihood of the plate 14 being ripped away from the strip 12.

At the top of the vertical shank 10 is an arm 15, which for the large part of its length is tapered and diamond-shaped in cross-section and which ends off in the round tapered portion 16. It will thus be seen that when the handle 17 is driven home the tapered portion 15 being flat-sided holds the handle 17 from turning and gives the whole structure more rigidity.

I do not wish to be understood as limiting myself to brazing to secure the strip 12 and the plate 14 together; but this is the preferred form of fastening, and the office of the strip 12 will be understood to be to furnish a slight give to the strain put on the plate 14, so that the surfaces will not be torn and the plate 14 come away from the strip 12.

Having thus described my invention, what I claim is A plasterers trowel comprising a handle portion, a support for the handle portion having projecting arms, a flat flexible strip riveted to the arms of the support, the strip being thin and projecting beyond the arms to a considerable extent, and a plate brazed to the strip, the portions of the strip beyond the arms being adapted to bend with the plate to prevent the tearing of the plate from the strip.

In testimony that I claim the foregoing I have hereunto set my hand this 18th day of 7 December, 1906.

ROBERT E. MARTIN.

Witnesses: WM. H. OAMFIELD, E. A. PELL.

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