US2530918A

US2530918A - Hair shaper

Info

Publication number: US2530918A
Application number: US688294A
Authority: US
Inventors: Taylor Don
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-08-03
Filing date: 1946-08-03
Publication date: 1950-11-21
Anticipated expiration: 1967-11-21

Description

TAYLO HAIR SHAPER gva 2 9 Filed Au 1946 NVEN TOR. D on Tay/O Patented Nov. 21, 1950 "UNITED STATES PATENT OFFICE SHAPE DonTaylor, Detroit, Mich.

Application August 3, 1946, SerialNo. 688,294

(Cl. Bil-30) 15 Claims.

1 This invention relates to hair shapers, such as are equipped with a razor blade and are commonly used in beauty shops and the like to impart a desired end form to strands of womens hair. The present application is directed to an improvement on the subject matter of .my pending application, Serial Number 670,473, filed May 17, 1946.

An object of the inyentionis to provide an .improved mechanism for latching a blade ,in its mounting and ejecting it when desired.

Another object-is to provide a blade mounting of a type having guard teeth for the cutting edge of the blade, and to afford the blade .two definite positions of use, each exposing portions of the other blade position.

Another objectis to so fo m the bladeand its mounting as to safeguard thecutting edgeof the blade from contact with the mounting.

These and various other .objects are attained by the construction hereinafter described and illustrated in the accompanying-drawing,where- Fig. 1 is an enlarged side elevational iew of my improved hair shaper, showing a blade latched in its mounting.

Fig. 2 is a similar elevational view in partial section, showing the blade partially ejected.

Fig. 3 is an end view ofthe implement.

Fig. 4 is a cross sectional view taken on the line 4-.d of Fig. 1.

Fig. 5 is a cross sectional view of the handle, taken on 5-5 of Fig. 2.

Fig. 6 is a fragmentary perspective View of the blade.

in these 'views,.the reference character 1 designates an elongated mounting for a thin elongated blade 2 having a razor edge 3. The mounting is formed with a narrow socket 4 wherein the blade is removably inserted, such socket opening in an end face of the mounting. Adjoining the other end face of the mounting, an abutment 5 for the blade is formed, and a suitable handle 6 for the implement projects. A guard for the cutting edge 3 is formed on the lower portion of the mounting by a row of teeth 7, similar to those of a comb. The upper portions of such teeth form the lower portion of the socket 4, the teeth projecting a suitable distance below the cutting edge. It is desirable to avoid dulling said edge through contact with the tooth-formed bottom wall of the socket 4, and such contact is prevented by giving the top portion of the blade a slight excess of thickness over cutting edge rendered idle by the teeth in the the lower portion, resulting in longitudinal shoulders 8, the socket being correspondingly shaped. Thus the .edge 3 exercises no blade supporting or guiding function.

For latching the blade in inserted position, a resilient elongated latch piece 9, preferably m tallic, is set jointly ,into the handle and mounting, the forward portion of said strip passing above the abutment 5 and terminating in a downwardly projecting detent It toenter anotc'h ,I l in the upperedge of the blade. The rear portion of the latch piece is exposed beneath the handle, being terminally formed with a downwardly projecting actuating lug l2. Between its rear portion and higher front portion, the latch piece is inclined at approximately forty-five degrees as is indicated at 13, forming a cam to engage the abutment .57. .Rea w d y o i s in l ned portion It, the latch piece is confined in the handle and limited in its play to a forward and back sliding travel. Thus when the latch piece is slid forward from its normal retracted position, in which the blade is held in place by said detent, the cam portion I3 rides up said abutment, flexing the forward portion of the latch piece upwardly to release the blade from the tooth It. This release does not occur, however, until the blade ,has been slid forward sufliciently .to expose its front end portion (Fig. ,2), thus permitting ready removal of the blade. Following insertionof anew blade, retraction of the latch piece will release the .cam portion J3 from abutmentfi, allowing the latchpiece to flex down to retain the new blade by the detent Ill. The latch piece 9 thus has the additional functionof a blade ejector. The rear portion .of the socket A-opens into a chamber M in the mounting, ac,- commodating the raised forward portion of the latch piece and affording the required sliding and flexure of such portion.

To retain the blade in a use position, the latch piece must itself be retained, and it is preferred to provide two latching positions in one of which the blade contacts the abutment 5, being sufficiently shifted forward in the other position to expose those portions of the edge 3 which were shielded by the teeth l in the first-mentioned position. To thus derive an eventual cutting function from the full length of the edge 3, the spaces between the teeth must equal the teeth width, at least in the plane transverse to the teeth established by the cutting edge. The two required latching positions of the piece 5 are established preferably by providing a small tooth IE on the upper edge of said piece, near its rear end, for

engagement in either of two small recesses IS in the handle. Said tooth flexes the exposed rear portion of the latch piece slightly downwardly during sliding actuation of said piece, so that the tooth snaps ino either recess when registered therewith. The recesses and tooth [5 are preferably V-shaped, so that a release may be efiected by applying a moderate longitudinal pressure to the latch-piece. The tooth l5 slides in a narrow upward extension of the handle passage receiving and guiding the latch piece 9, as best appears in Fig. 2, such passage affording no vertical play to the latch piece.

The mounting l and handle 6 are preferably formed of a tough plastic material, as for example, Lucite, and this material may be transparent, permitting a user of the implement to observe the functioning of the combined latch-piece and ejector. Preferably a reinforcing wire I1 is embedded in the top portion of the mountin extending substantially the full length thereof and also some distance into the handle.

Provision of the described latch-piece, exercising also an ejector function, assures against accidental escape of a blade from the mounting and also avoids difficulty in ejecting a blade. Such difliculty tends toarise if a blade is corroded or not perfectly straight or if particles of dirt clog the socket l. Adaptability of the blade to be used in two positions, each bringing into use portions of the cutting edge guarded in the other of said positions, substantially doubles the useful life of the blade as compared to construetions lacking this feature.

What I claim is:

1. A cutting implement comprising a blade having a cutting edge, an elongated mounting formed with a socket proportioned to receive the blade and opening substantially at one end of the mounting to afford insertion and removal of the blade, a row of teeth on the mounting extending across and partially shielding said edge, a latch member carried by the mounting to retain the blade in the socket, and slidable longitudinally of the mounting, to release the blade, and having a portion resiliently flexible to operatively engage and disengage the blade, such portion being normally sprung to a blade-engaging position, the mounting and latch member having a provision is: )lormally holding such member in a blade-retaining position, and an abutment on the mounting engageable by said flexible portion of the latch member, upon a sliding actuation of such member, to flex said portion to a blade-releasing position.

2. A cutting implement as set forth in claim 1, said flexible portion of the latch member being 4 bent diagonally to the length of the mounting to engage and respond to said abutment.

3. A cutting implement as set forth in claim 1, said latch member having a sliding travel in the mounting adequate to partially eject the blade from the socket in advance of engagement with said abutment.

4. A cuttin implement as set forth in claim 1, said latch member being elongated lengthwise of the mounting and being housed within the mounting throughout the major length of said member, and having an end portion exposed exteriorly of the mounting to afford sliding actuation of said member.

5. A cutting implement comprising a blade having a cutting edge, an elongated mounting formed with a socket proportioned to receive the blade and opening substantially at one end of the mounting to afiord insertion and removal of the blade, a combined ejector and latch member for the blade slidable in said mounting toward and away from said opening and having a portion resiliently flexible into and out of operative engagement within the blade, such portion being normally sprung to a blade-engaging position, said latch member being terminally formed with a detent for latching and ejecting engagement with the blade, said resiliently fiexible portion forming a cam predeterminately spaced from said detent, and an abutment on the mounting engageable by said cam, responsive to blade-ejecting sliding travel of said member, to release the blade from the detentby fiexure of said resilient flexible portion.

DON TAYLOR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 790,439 Kampfe May 23, 1905 1,212,956 Johnstone Jan. 16, 1917 1,217,570 Cox Feb. 27, 1917 1,705,205 Reams Mar. 12, 1929 1,888,488 Brown Nov. 22, 1932 1,906,573 Gits May 2, 1933 1,932,876 Agostini Oct. 31, 1933 1,940,855 Friedman Dec. 26, 1933 2,109,108 Fesler Feb. 22, 1938 2,260,141 Hanle Oct. 21, 1941 2,270,655 Keeran Jan. 20, 1942 FOREIGN PATENTS Number Country Date 168,449 Great Britain Sept. 8, 1921