US1726161A - Brush - Google Patents

Description

Aug. 27, 1929. J. F. MURPHY BRUSH Filed Sept. V24, 1926 Patented Aug. 27, 1929.

UNITED STATES JAMES F. MURPHY, or DANBURY, CONNECTICUT.

BRUSH.

Application filed September 24, 1926. Serial No. 137,401.

This invention relates to brushes, especially to rotary brushes, and more particularly to a brush for raising the nap on velour hats. It has for an object to provide a brush construction in which the backing carrying the bristles isniore securely and uniformly attached to the body or support.

It is also an object of the invention to provide a construction in which the bristles may be quickly and easily renewed.

IVith the foregoing and other objects in view, I have devised the. construction illustrated in the accompanying drawings forming a. part of this specification. In this drawing, a,

Fig. 1 is a vertical section through the brush.

Fig. 2 is aside elevation thereof with a portion of a plate broken away to more clearly show the construction, and

Fig. 3 is a partial section of the brush showing a body member of different material.

The brush shown comprises a block or body member 5 of any suitable material, such as wood or rubber as shown at 5, Fig. 8, mounted on a shaft 6 and this block is'circular and preferably cylindrical. About the periphery of this body or block is placed a leather or other suitable flexible support 7 carrying the bristles 8. In this particular brush illustrated the flexible strip 7 is leather and carries the wire bristles 8, and for brushing or jacking hats to raise the nap for a velour finish these wire bristles are preferably bent intermediate their lengths in the direction of rotation, as indicated at 9, in Fig. 2.

The flexible strip 7 is wrapped about the periphery of the body with the bristles extending radially outward, and this strip has on its opposite edges extensions or flange portions 10 which may be folded over the edges of the block against the opposite sides thereof. In assembling, these flanges or extensions are tacked to the sides of the block at one end, as shown at 11, and then the strip is tightly drawn about the periphery of the block and tacked at suitable distances, as shown at 12. In order, however, that this should be secured entirely by tacks it would be necessary to put alarge number of tacks about the periphery of the body, and even then the strip would not be secured between adjacent tacks and would have a tendency to loosen and rise from the surface of the block in operation. Furthermore, the use of a large number of tacks requires a great deal of time in applying the strip to the block, or in removing an old strip and applying a new one in renewing the bristles after they become worn.

I overcome these objections by providing clampmg plates 13 on the opposite sides of the block. These plates may be substantially flat or shaped as shown on the drawing, but they are constructed and arranged to be clamped against the side extensions 10 of the fibre backing or strip which carries the bristles, and they should preferably engage these extensions throughout the periphery of the block. These plates are firmly clamped against the extensions on the opposite sides of the block to firmly clamp these extensions agalnst the block, and it will be apparentthat as they engage and clamp these extensions throughout their entire peripheries all portions of the strip are firmly and uniformly secured to the block, and therefore, there is no portion which is unsecured or can work loose and rise from the surface of the block in'operation. Furthermore, in attaching the backing strip carrying the bristles it is necessary to use only a sufficient number of tacks to apply the strip in proper position and hold it until the plates are clamped in position. The plates may be clamped against the opposite sides of the block by bolts passing through the plates and block, or by means of clamping nuts 14: threaded on the shaft 6. It will, of course, be understood that this shaft is adapted to be mounted in suitable bearings and connected to any suitable drive for rotating the brush. It will be equally apparent that with the use of these clamping plates the operation of renewing the bristles is greatly simplified and may be performed in much less time, as the operation of loosening the clamping plates, removing the small number of tacks and then applying the new backing strip with a new set of bristles is a very simple one. Furthermore, it will also be apparent that if tacks alone are relied upon the large number of tacks used will soon so tear the surface of the block after a few renewals of the bristles as to render the block useless.

For certain work I prefer to make this block or body 5 of rubber as it is adapted to yield to a certain extent and immediately resume its original shape. This can be used where a rigid backing would cause too heavy and unyielding pressure of the bristles against the surface of the hat and might tear or otherwise injure it.

Having thus set forth the nature of my invention, What I claim is:

1. A brush comprising a circular body member, a flexible supporting strip carrying bristles extending about the periphery of the body member and having flanges free of bristles extending onto the sides of said member, a pair of clamping plates one on each side of the body member, and means for clamping the plates to the body to clamp the said flanges thereto and secure the strip to the body.

2. A brush comprising a circular body member, a flexible supporting strip carrying bristles extending about the periphery of the body member and having side portions free of bristles passing over the edges of the body onto the side surfaces thereof, a clamping plate on each side of the body having a peripheral, raised, substantially flat surface forming an annular clamping surface arranged to engage said side portions of the strip throughout substantially the entire periphery of the body, and means for clamping the plates against said side portions to clamp the strip to the body.

3. A brush comprising a circular body member of material sufficiently soft to permit tacks to be driven into it, aflexible fibre strip carrying bristles covering the curved surface of said body and having extensions at the side edges thereof free from bristles folded over -the edges of the body onto the opposite sides thereof, tacks driven through said extensions into the body member, a clamping plate on each side of said body and arranged to engage said extensions throughout substantially their entire periphcry, and means for clamping said plates against said extensions to clamp said strip to the body. I

l. A brush comprising a circular body I member of yieldable resilient material as rubber, a flexible strip carrying bristles extending about the curved surface of said member, said strip carrying bristles and having extensions free from bristles at its opposite side edges folded over the opposite side edges of the block against the opposite side Walls thereof, clamping plates for engaging those extensions throughout substantially their entire lengths, and means for clamping the plates against said extensions to clamp the strip to the body member.

In testimony whereof I aflix my signature.

JAMES F. MURPHY.

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