Патент USA US2061445код для вставки
Patented Nov. 17, 1936 UNETED STATES 2,061,445 SAFETY RAZOR Charles L. Willcox, Atlanta, Ga. Application March 21, 1935, Serial No. 12,220 1 Claim. (Cl. 30---65)r This invention relates to improvements in` safe ty razors and particularly to a type employing a ilat blade with double cutting edges, the inven tion being directed to both the holder and the 5 blade, the holder susceptible for use with the commercial thin flexible double edged blades, the improved blade, however, permitting its re placement from the holder without dismantling the holder. An object of the invention is to provide a razor 10: blade holder having opposed plates for receiv ing and holding a ilat razor blade therebetween and sustaining its cutting edges in parallelism 15 with the guarding edges‘of a guard plate. Another object of the invention is to provide a razor blade holder in which the blade is secured between opposed plates adjustable as a unit toward and from a guard plate, whereby the blade, opposed and guard plates may be moved relatively to each other to separate the parts for 20 the purpose of cleansing without requiring the blade to be removedfrom the holder. Another object of the invention is to provide a razor blade holder with opposed plates for receiving and holding a double edged i‘lat blade 25 therebetween, and adjustable as a unit toward and from a concaved face of a guard plate and against a flat spring interposed between the op posed plates and concaved face of the guard plate for tensioning the spring to compress the opposed 30 plates together and regulatably position the cut ting edges of the blade in parallelism with the guarding edges of the guard plate for either coarse or fine shaving. 35 v Various other features and advantages of the invention will be more fully set forth in the de scription of the accompanying drawing, in which: Figure l is a perspective view of the holder with the parts in separatedfposition for blade replace 40 ment. Figure 2 is a side elevation of the holder ready for use. Figure' 3 is an end view thereof. Figure 4 is a section on line 4_4, Figure 2, showing the clamp assembly with an interposed 45 blade adjusted against a spring and guard plate in one limit of adjustment. Figure 5 is a section on lineä-ii, Figure 2. Figure 6 is a sectionon line 6_6, Figure 2. Figure '7 is a sectional View similar to Figure 6 50 but taken below the plane of clamp assembly in order to show the spring. Figure 8 is a plan view of the improved blade. Referring to the drawing, l indicates a handle having a guard plate extending cross-wise of one end thereof, as a T-head integral therewith or permanently ñxed thereto. The guard plate 2, is of curved or arcuate form in cross section, the arc inverted to curve toward the handle, providing a channel in its outer face longitudinally thereof. Thelongitudinal opposite edges of the guard plate 2 are provided with outstanding guard teeth 3. The handle I! is of hollow or counterbored tubu lar construction for thereception of a steril or elon gated `stud 4 integral with and centrally trans 10 versely extending from the lower side of an outer clamping plate 5. The extremity of the stem or stud is screwthreaded for coaction with an in ternally threaded sleeve nut or adjuster ii, telem scopically and rotatatively engaged within` the 15 outer end of the hollow handle, whereupon rotat ing the sleeve nut or adjuster 6 the stem with its outer clamping plate 5, as a unit, may be ad- justed in appropriate directions for either clamp ing or releasing a double edged razor blade l, 20v interposed between the clamping plate 5 and a lower or second clamping plate 8. The tight ening of the clamping plates 5 and 8 draws the clamping plates and razor blade toward the guard plate 2 for rigidly securing the parts of the holder 25 assembly together. The sleeve nut or adjuster 5 is provided with a knurled head 9 external of the outer end of the handle as a iinger hold for rotating the sleeve nut. The head 9 abuts the end of the handle 30 which is flanged or spun inwardly into an annular groove in the periphery of the sleeve nut to c0n~ fine the sleeve _nut against longitudinal displace- ‘ ment. ì The stem 4 of the outer clamping plate 5 trav erses the lower clamping plate ß through a cen tral aperture therethrough, and the lower side of the lower clamping plate4 8 has a rib lll cen trally longitudinally thereof for bearing upon a spring plate or leafll interposed between the 40. lower clamping plate 8 and the channel side of the guard plate 2. The channel in the guard plate 2, in tightening the parts of the assembly, allows the spring plate or leaf Il to be trans versely flexed into the channel. 45 - For clamping the razor blade, the sleeve nut 6 is rotated in an appropriate direction for drawing the stem fi and clamp assembly toward the guard plate E!y against the spring plate il, stressing the same for imparting a pressure to bind the clamp ing plates and blade together. Normally the ad justment is to such a degree as will bring all of the parts in rigid contact with one another and provide a minimum space between the cutting 55 2 2,061,445 edges of the blade and teeth of the guard plate, as shown in Figure 5, whereupon the holder is ready for use. With the parts in their fully clamped position the holder is used for going jecting the same to the spray of water from a nozzle or faucet and thereafter shaking the holder to remove the moisture. over the face the first time. For a subsequent going over or closer shaving, the sleeve nut is unscrewed a half turn or more, allowing the blade holder permits a commercial blade to be engaged over a pair of studs I2, I2 protruding from the upper or face side of the lower clamping plate 8, which register and respectively engage through to recede slightly from the toothed edges of the guard plate 2 but without loosening the clamping bind upon the blade, which is maintained by the pressure of the spring plate II. This furnishes Removing the outer clamping plate 5 from the correspondingly located apertures I3, I3 in the outer clamping plate 5. The stem 4 is engaged 10 through the central aperture in the blade and a a greater degree of blade freedom from the guard corresponding aperture in the lower clampingr teeth and for a movement of the blade at a more varied degree of angle over the face than is pos plate 8, and thence connected with the sleeve sible under the minimum spacing of the blade edges from the guard teeth. In shaving for the ñrst going over of the face with the clamping assembly firmly or fully clamped, the holder is held at substantially the same angle as in the use of all safety razors, ap proximately bringing the blade to an angle of 45°. Under no circumstances should the blade assem bly be held perpendicular or flat against the face. 25 The angle at which the razor is held and the dis tance between the cutting edges of the blade and the toothed edges of the guard plate are impor tant factors toward producing the best results. The individual can easily determine the most 30 suitable adjustments for his requirements. The spring plate II extending or coinciding with the length of the clamping plates and when slightly flexed crosswise exerts ample pressure 35 upon the clamping plates and blade to prevent any tilting or Vibratory action of the blade and a very eirective range of blade adjustment toward and from the toothed edges of the guard plate is obtained, and ample to meet all requirements. The blade under any degree o-f shaving adjust 40 ment is always securely bound between the clamp ing plates, leaving no opportunity for individual ñexing of the blade between the clamping plates, as in the case of the commercial razor blade hold 45 ers wherein the blade is clamped between a clamp ing plate or member and the guard plate, requir ing the parts to be ñrmly clamped together to sustain the blade stable. In the holder of the present invention the blade 50 is clamped in a horizontal plane, there is no bow ing of the blade, and its plane is not disturbed for its various shaving adjustments. In the com mercial razor blade holders wherein the blade is bowed in clamping, it is necessary to tighten the 55 parts to their full limit, otherwise the blade is not secure for shaving. The holder is adaptable for the commercial double edged wafer type of blades, usually con taining three aligned apertures or an elongated 60 slot of peculiar configuration longitudinally of the blade to be fitted and engaged over a plurality of studs carried by one or both of the clamping elements, for sustaining the blade and clamping elements in relative alignment and registration. 65 To insert such standard types of commercial blades within the holder it is necessary to com pletely unfasten and remove the outer clamping plate 5 from the holder to allow its stem to be engaged through the blade. This, however, is only necessary for blade replacement, as ordi narily after use of the razor the clamp assembly is loosened sufliciently to fully reflex the spring plate II, to preserve its resiliency and which will 75 amply suilice for cleansing the part as by sub nut 6 and the parts tightened as heretofore de scribed. 15 I To automatically open and close the clamping elements and to non-rotatively sustain the stem 4 and its clamping plate 5 upon the holder or within the handle thereof and to maintain true 20 alignment between the two sections of this detail under extreme open adjustments, the stem is provided with a longitudinal key way I4 for re ceiving a key ñxed within the lower clamp plate. 'I‘he assembly, as described, responds to the ac 25 tion of the adjuster 5 to alternately and automat ically adjust the cutting edges of the blade in their relation to the edges of the guard plate and also open and close the clamp plates for the re ception and removal of the blade. 30 The necessity of disassembling the clamping elements for blade replacement can be avoided by the employment of a specific type of blade, as illustrated in Figure 8. The blade is of the double edged wafer type, but as it is not flexed in clamp 35 ing can be of a heavier gauge metal, giving it more body and added durability. It is provided with a single aperture I5 to engage over one of the studs I2 of the lower clamping plate 8 and an elongated slot I6 open to an outer edge of the 40 blade. The elongated slot receives the stem 4 of the outer clamping plate 5 and the second stud I2 of the lower clamping plate 8, and permits of sidewise insertion or withdrawal of the blade from the stem 4 without removal of the stem and cap plate from the device. The clamping assembly need only be loosened enough for the studs to clear the outer clamping or cap plate 5 for a passage of the blade therebetween, as illustrated 50 in Figure 1. The lower clamping plate 8 is sustained in longitudinal alignment and registration with the guard plate by a pair of studsA I'I, I‘I, extending laterally from the lower side of the lower clamp 55 ing plate for engagement through a correspond ingly located set of apertures in the spring plate and guard plate andprotrude from the lower side of the guard plate. The studs I1, I‘I respec tively are each headed by a screw I8, which pre 60 vents displacement of the lower clamping plate from the guard plate by restricting its motion to the necessary play for a full reflex adjustment of the spring plate. This materially facilitates and expedites the general use of the holder in 65 blade replacement with convenience and dispatch. The blade being firmly clamped between a pair of rigid clamping plates, held together as a unit under the pressure of the spring plate for the range of adjustment for varying the spacing be 70 tween the cutting `edges and guarding edges, the cutting edges are always maintained in parallel ism with the guarding edges of the guard plate for a uniform performance for the full length 75 2,061,445 of the cutting edge. Adjusting the blade cutting edge from the guarding edge provides for more exposure of the cutting edge for closer shaving, eliminating the necessity of forcibly applying the guarding edge against the skin, to bring the cut ting edge into greater intimacy with the skin and unless properly guarded one is apt to cut the skin. The advantage is to apply the razor to the skin with the least pressure possible, so as 10 not to destroy the utility of the guarding edge, relying on the keenness of the cutting edge to cut the hair under a sliding stroke or movement and the weight of the holder bearing the guard ing edge against the skin, while the user only 15 draws the holder over the skin and presents the blade at an appropriate angle. Having describe-d my invention, I claim: A safety razor comprising a holder, the holder 3 between and in longitudinal registration With the guard plate, a razor blade removably disposed between said clamping plates, a spring plate lon gitudinally interposed between said clamp-ing plates as a unit and concaved side of said guard plate, the inner of said clamping plates having a pair of aligned studs extending laterally from one side thereof, respectively projecting through apertures in said blade and outer clamping plate, and a central longitudinal rib and pair of aligned 10 studs extending from its opposite side, the rib in contact with the spring and the studs engag ing respectively through apertures in said spring and guard plate, and means carried by the handle connecting with one of the clamping plates for urging said clamping plates, razor blade and 15 spring plate unitarily toward the guard plate for rigidly binding the parts together and for regulating the spacing between the cutting edges constituting a handle and guard plate, the guard o-f the razor blade and guarding edges of the guard 20 plate, and for automatically opening and closing of the handle and concaved longitudinally, a pair of opposing clamping plates, as an outer and inner, interveningly clamping a razor blade there the clamping elements for the reception or re moval oi’ the blade. 20 plate extending centrally transversely of one end CHARLES L. WILLCOX.