US572347A - Frank ist - Google Patents

Description

(No Model.)

F. N. LOOK. BRUSH.

No. 572,347. Patented Dec. 1, 1896.

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yam YQWC J. {ma/Q UNITED STATES PATENT OFFICE.

FRANK N. LOOK, OF NORTHAMPTON,

MASSACHUSETTS, ASSIGNOR TO THE BRUSH.

SPECIFICATION forming part of Letters Patent No. 572,347, dated December 1, 1896.

Application filed August 21, 1893.

T to whom it may concern:

Be it known that I, FRANK N. LOOK, a citizen of the United States, residing at Northampton, in the county of Hampshire and State of Massachusetts, hax e invented certain new and useful Improvements in Brushes,of which the following is a specification, reference being had therein to the accompanying drawings.

My invention has for its object to provide a durable brush which may be produced at a low cost; and it consists of a brush made as hereinafter set forth, and the novel features of which are pointed out in the claim which is appended hereto.

In the accompanying drawings, which form a part hereof and to which reference is made in the following description, Figure l is a View of a brush embodying my invention, one half of said view being in elevation and the other half in section to more fully show the construction of the brush. Fig. 2 is a section of the face-plate through which the bristles project, detached.

The construction of the brush is simple and will be readily understood from the following description.

For convenience of description I will designate that portion of the brush through which the bristles project as the face and the opposite portion as the back. The face is shown at A and the back at B. The face and back may be made of any desired shape or contour, depending upon the use for which the brush is designed. The face is made of sheet material, preferably metal, which is bent or struck up around the edges or otherwise formed with the curved integral flange portion shown at (Z, and is perforated or provided with a series of holes g, one for each tuft of bristles. If the tufts of bristles are to diverge, as shown, and as is usually the case, the holes g are preferably formed so that their walls will be parallel with the direction of the bristles, but this is not essential, and the holes may pass directly through the face A at right angles thereto, or may be formed in any well-known manner. The holes 9 will be disposed over the face A in accordance with the shape and character of the brush to be produced. In hair and cloth brushes the -tions may be used.

Serial No. 483,612. (No modeld bristles are usually set in straight or curved parallel rows. After the holes for the bristles are made the face A and the flange thereof may be finished in any well-known manner, as by polishing, embossing, enameling,

or otherwise ornamenting. The tufts of bristles are then inserted in the holes of the face A, being held temporarily in the proper position in any well-known manner, as, for example, by means of a perforated block, into the perforations of which the points of the bristles project. A plastic composition or cement, (shown at 10,) which will set and harden after being laid, or any equivalent substance in which the inner ends of the bristles may become embedded and whereby the bristles may be bound in place, is then placed inside of face A, filling the said face and being molded to fit the interior thereof, the flange cl of the face being well adapted to hold said cement or equivalent substance in place, and the inner ends of the bristles, which project through the face, are firmly embedded in and covered or surrounded with 7 5 the cement, which latter is then allowed to set and harden and serves to firmly secure the bristles in position.

Before the cement is applied the inwardlyprojecting ends of the tufts of bristles may, if desired, be burned by means of a flame in the well-known manner, which causes their ends to swell or enlarge, thus making an enlargement on the inner ends of the tufts,which aids in securing them firmly in place after 8 they are embedded in the cement. The precise character of the plastic composition or cement which is employed is not essential. Any of the well-known cements or composi- It is desirable, however, to use a cement which is not affected by water. After the cement has hardened a back of suitable material may be applied to the face and secured thereto in any well-known manner. I prefer to form the back B of sheet 5 metal or similar material, which may be molded to provide it with a flange, as shown at f. By forming the flanges d and f of the face and back, respectively, with a curved form.

or concavo-convex in cross-section the face Ice and back maybe secured by bringing the flanges together, causing them to overlap,

that is, the outer curve of one flange, say the flange f, will pass over the outer curve of the other flange cl, thus securing the face and back together. This method of securing the back to the face is not broadly claimed by me, but is claimed in an application filed by A. O. Estabrook August 21, 1893, Serial No. 483,603. The edge of the outside flange lies in the groove which is adjacent to the convexity of the inner flange, so that the free edge of the said outside flange is concealed after the parts are joined and it is difficult to detect the joint or tell by examination of the exterior of the brush-body how it is constructed.

By this method an inexpensive and very durable brush having a metal face which is not affected by moisture may be produced. The metal face may also be finely finished, giving the brush a beauty and symmetry not otherwise obtainable.

hat I claim is- A brush having a hollow sheet-metal face perforated for the reception of the bristles, cement or composition filling. the hollow of the said face inside the flange and molded therein, said filling forming a reinforce for said face, said face having around the edge thereof a flange which projects beyond the said filling and is curved or concavo-convex in cross-section, tufts of bristles extending through the perforations in the face into the said cement or composition, said tufts having their inner ends embedded in and surrounded by the latter and secured in place thereby, and a hollow sheet-metal back also having around the edge thereof a flange which is curved or concavo-convex in cross-section and having its flange lapped over that of the face to unite the face and the back, with the free edge thereof concealed in the depression that is form ed in the inner flange adjacent to the convexity of the latter, the overlapping flanges forming an intermediate bead, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK N. LOOK. Vitnesses:

J os. E. WINOHELL, S. W. WARREN.

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