US2074364A - Curling iron - Google Patents

Description

E CLEIN CURLING IRON March 23, 1937.

Filed March 15, 1935 EL/ sCLE/N INVENTOR A ATTORNEY Patented Mar. 23, 1937 UNITED STATES FATE 4 Claims.

My invention relates to improvements in curling irons and hasreference particularly to' the arrangement of the pivotal connection between a solid rod or mandrel and the clamping member therefor and to the novel disposition of the spring which yieldably urges the clamp against the mandrel.

Many of the curling irons manufactured for the lower price field utilize tubular stock in their mandrels and it will be readily appreciated that a tubular member will not retain heat with anything like the efficiency enjoyed in a solid rod. But it is considerably less expensive to use the hollow stock for this purpose,.principally because the clamp and its spring are more easily mounted and accommodated in the hollow mandrel than is the case where a solid rod is used. Those few who managed to use a solid rod or mandrel in their irons and still kept the cost of manufacture at a comparatively low figure were obliged to mount the clamp springs on the exterior of the iron and in so doing sacrificed not only the appearance of the article, but made it possible to easily entangle the hair in the exposed clamp spring.

With the foregoing in mind, it is the purpose of the present invention to manufacture a curling iron, which will compete in the low class field, and which is provided with a solid metal mandrel and accommodates a concealed clamp spring.

I accomplish this purpose by means of the embodiment of my invention hereinafter described, set forth in the appended claims and illustratively exemplified in the accompanying drawing, in which,

Figure 1 is a side elevational view of my improved curling iron showing parts in section;

Figure 2 is a top plan view of the iron showing the clamping member partly in section; and

Figure 3 is a substantially transverse sectional view taken on lines 3-3 of Figure 1.

Referring to the drawing, [0 denotes a solid cylindrical metal rodor mandrel, the outer end of which is beveled in the approved manner, while the other end is provided with a wood grip or handle l'l. Substantially midway the length of the solid rod l0 and just beyond the inner end of the handle II the top of the rodis provided with a longitudinally disposed groove l2, which is milled out of the material by the simple arouate movement of a cutter, so that the mid section of the groove is the deepest and each end curves upwardly to the surface. Transversely disposed openings l3 are drilled in the walls of the groove l2 at the center thereof and. the lips of the walls below this point are cut away in a curve I4, as shown in Figures 1 and 2.

A clamp I5 is pivotally mounted on the outer ends of a pivot pin 56 which is carried in the openings I 3 and disposed between the walls of the groove I2. The clamp l5 comprises a semicylindrical member bent to an angle, so that one arm 'is capable of fitting closely over the upper surface of the mandrel throughout its length beyond the pivot pin It and the other arm projecting outwardly over the inner end of the handle H to carry a thumb button H at its end. The side walls of the clamp just beyond the angle thereof are provided with alined openings to receive the ends of the pivot pin It. The angle of the clamp I5 is virtually a curve and is adapted to rock over the curved portions M of the lips formed by the walls of the groove 12, when the clamp is moved to open position by depressing the thumb button ll.

Concealed within the groove I2 is a clamp spring [8 having its coils wrapped about the mid section of the pivot pin it, while the ends are under tension and engaged, respectively, against the bottom of the groove I2 and inner side of the shorter arm of the clamp l5.

As a result of this construction the curling iron may include a solid metal mandrel and a concealed clamp spring at a cost no greater at least 3 than that involved in turning out the very inferior hollow or tubular curling iron.

What I claim and desire to secure by Letters Patent is:

1; In a curling iron, the combination of a straight solid metal mandrel having a groove disposed in its surface and a handle at one end, an angular hair clamping member pivoted on and movable to and from the mandrel, and a spring arranged in the groove and disposed under tension to engage and. hold the clamping member into engagement with the mandrel.

2. In a curling, iron, the combination of a straight solid metal mandrel having a longitudinally disposed groove in its surface, and accommodating a pivot pin transversely of the groove, a hair clamping member pivoted on said pin and movable to and from the mandrel, and a spring coiled about said pin within the groove and held under tension with its ends, respectively, pressing against the mandrel and clamping member.'

3; In a curling iron, the combination of a straight solid metal mandrel having a handle at one end and a longitudinally disposed groove milled in its surface adjacent the handle, a pivot pin projecting transversely of the groove and through the Walls thereof, a clamping member comprising an angular strip of semi-circular material, one arm of the clamp being straight and adapted to embrace the mandrel beyond the pivot and to journal on the pivot pin just beyond the angle, the other arm of the clamp projecting outwardly over the inner end of the handle to form a thumb piece, and a spring coiled about the pin 10 in the groove with its ends under tension and in engagement with the bottom of the groove and the inside of the thumb piece of the clamp to urge it towards the mandrel.

4. A curling iron, as claimed in claim 3, in which the angle of the clamping member is a curve and the outer lips of the walls forming the groove in the mandrel are recessed along the same curve as the angle of the clamp, whereby the latter may rock along said recess.

ELIAS CLEIN.

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