US748416A - Hair-clipper. - Google Patents

Description

No. 748,416. PATBNTED DEG. 29,A 1903.

J. K. PmsT.

HAIR GLIPPER.

l APPLIoATIoN FILED JAN. zz. 1903.

N0 MODEL.

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Patented December 29, 1903.

PATENT JOSEPH K. PRIEST, OF NASHUA, NEW HAMPSHIRE, ASSIGNOR TO AMERICAN SHEARER MANUFACTURING COMPANY, OF NASHUA, NEW HAMPSHIRE, A CORPORATION OF NEW HAMPSHIRE.

HAIR-CLIPPER.

SPECIFICATION forming part of Letters Patent No. 748,416, dated December 29, 1903. Application filed January 22, 190B. Serial No. 140,079. (-No model.)

To a/ZZ whom, it may concern:

Be it known thatI, JOSEPH K. PRIEST, acitizen of the United States, and a resident of Nashua, county of Hillsboro, State of New Hampshire, have invented certain new and useful Improvements in Hair-Clippers, of which the following is a specification.

My invention relates to hair-clippersof the class comprising a relatively stationary Io toothed blade and another toothed blade arranged to slide crosswise of the first.

The object of my invention is particularly to improve the bearing-of the movable blade, so as to give the same an easy motion and to I5 avoid excessive friction.

In devices of this character it has been customary to employ balls for reducing the friction; but it has been found that balls are liable to cut into the surfaces which they enzo gage, so as to increase the friction by wear, besides becoming more and more liable to breakage. It has also been attempted to use rollers mounted to turn about stationary axes; but this construction has been found defective, for the reason thatdirt and short hairs will pack around the ends and periphery of the roller, preventing it from turning and causing a material increase of friction.

The object of my present invention is toY 3o so improve the bearing of the movable blade as to combine` in one structure the advantages ofthe ball and of the roller, while avoiding the defects of both. To this end I em ploy rollers capable of traveling bodily in 3 5 the direction in which the movable blade is thrown and not only of rotating about stationary axes. I also provide means for retaining such rollers in their positions even when the movable blade is taken away, and,

4o further, in one form of my invention I roundA one end of the roller, so as to give it a hemispherical shape.

The invention will now be described with reference to the accompanying drawings, and the features of novelty will then be pointe out in the appended claims.

Figure 1 ,is aninverted plan of a clipper constructed according to my invention, with the stationary blade removed. Fig. 2 is a 5o sectional elevation substantially on line 2 2 of Fig. l, with the stationary blade in position. Fig. 3 is a side view with parts in section on line 3 3 of Fig. 2. Fig. 4L is an inverted plan of the bearing-blade, showing a construction different from that illustrated by Figs. l to 3; and Fig. 5 is a crosssection on line 5 5 of Fig. 4:.

The hair-clipper to which my invention is shown applied comprises a stationary blade A, having teeth A', a movable blade B, having teeth B and slots B2, a cover-plate C, which normally is rigidly connected with the stationary blade by means of a screw D and nut D', said cover-plate being provided with a handle D2 and a movable handle E, pivoted 65 about the screw D and having a projection E to throw the movable blade B in one direction or the other. The cover-plate also has pins C projecting into the slots B2, so as to guide the movable blade. A spring F serves for normally pressing the handles D2 E apart.

So far as above described the construction is or may be the usual one.

According to my invention the movable blade B is arranged to engage rollers G, mounted to travel in recesses H', provided either directly in the cover-plate C or inan auxiliary plate H, secured to said cover-plate in any suitable manner, as by means of a screw H2. The length of the slots H' is much greater than the diameter of the rollers G, so that the said rollers may travel bodily from one end of the slot to the other. The movable blade preferably has a` groove B3, engaged by a lip C2 of the cover-plate, and this lip also Vforms a guide for one end of the rollers G. This end is made fiat, while the other end of the roller is reduced, preferably spherically, and is adapted to lit a beveled or undercut surface H3 of the plate H. Preferably a thin plate of spring metal I is interposed between the plate H and, the coverplate C. With this construction the rollers will be prevented from dropping out of the 95 slots H' even if the tool is taken apart, so that the movable blade B will no longer engage the rollers. As the movable blade is reciprocated by the handle E the rollers G will travel from one end of the slots H to the roo other and friction will be reduced very materially. At the same time should any hair Work into the slots H the reduced or rounded end of such roller will assist in throwing oft such hair or dirt, although the traveling motion alone is suicient to produce this result.

In the form of construction illustrated by Figs. 4 and 5 the cover-plate C3 is provided or formed with recesses H6, in which are secured bearing-plates H4, which are provided with guideways for the rollers G'. These guideways are open at both ends of the bearing-plate and are adapted to be closed by the side Walls H7 of the recess H6. The rollers may, therefore, be readily inserted endwise into the guideway of the bearing-plate H4 when the latter is separat-ed from the clipper. These guideways are provided with flat surfaces to engage the peripheries of the rollers and, further, have cut-out side walls H5, forming grooves or undercut portions for the reception of pins G2, projecting from the ends of the rollers. These rollers, like the rollers G of Figs. 2 and 3, are adapted to travel bodily lengthwise between the cover-plate and the movable blade. 'Ihe pins G2, in connection with the undercut grooves H5, prevent the rollers G from dropping out when the cover-plate is separated from the other parts of the hair-clipper.

It will be understood that the construction embodying bearing-plates H4, set in recesses H6 and having guideways, the open ends of which are closed by the side walls H7 of the recesses H6, may be employed in conjunction way extending crosswise of the recess and y having its ends normally closed by lthe side walls of the recess, and rollers arranged to travel bodily in said guideways and prevented from leaving the same by the side walls of the recess, said rollers being adapted to engage either member.

2. In a hair-clipper or the like, the combination With a stationary member and a movable member, one of said members being provided with guideways, of rollers arranged to travel bodily in said guideways and to engage the other member, each of said rollers having one rounded end and the other end terminating in a plane perpendicular to its axis.

In testimony whereol` I have signed my name to this specification in the presence of two subscribing Witnesses.

JOSEPH K. PRIEST.

Witnesses:

JOHN P. GoGGIN, WM. A. NELSON.

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