US3050852A - Safety razor spider - Google Patents

Description

Aug. 28, 1962 w. l. msssu SAFETY RAZOR SPIDER 2 Sheets-Sheet 1 Filed Aug. 4, 1960 IN V EN TIOR. Warren I N155 en 1 w. l. NISSEN 3,0505852' SAFETY RAZOR SPIDER Filed Aug. 4, 1960 2 Sheets-Sheet 2 INVENZOR. Warren 1. N/ssen United States Patent 3,050,852 SAFETY RAZOR SPIDER Warren I. Nissen, Topsfield, Mass., assignor to The Gillette Company, Boston, Mass, a corporation of Delaware Filed Aug. 4, 1960, Ser. No. 47,537

Claims. (Cl. 30-605) This invention comprises a new and improved spider for safety razors of the divided cap or clam shell type.

In safety razors of this general construction such as that disclosed in Muros Patent No. 2,009,272 granted July 23, 1935, the cap sections are pivotally mounted at their ends in a spider which is arranged to be moved downwardly with the cap sections to clamp the blade in shaving position, and upwardly to release the blade and open the cap sections to permit cleaning or replacement of the blade. In order to secure the requisite edge exposure at both sides of the razor, the spider must be strongly and accurately constructed and operate so that the razor shall be organized for eflective shaving without danger to the user.

A principal object of the present invention is to provide a spider that has the above-mentioned desirable characteristics and yet lends attractive appearance to the razor, which at the same time may be constructed at low cost principally of sheet metal and of parts individually easy to produce and convenient to assemble always in their proper positions.

Going more into detail, the spider of my invention which is particularly adapted to be carried by an upright spindle such as disclosed in the above-identified patent comprises a 2-ply carrier bar of sheet metal constructed to be secured to the top of the spindle and having at both ends angular flanges formed in each of its plies, and crossbars held at right angles to the carrier bars by substantial areas of contact provided by the flanges and interlocked with the carrier bar at least in part through the medium of the flanges. The carrier bar may be readily formed from a flat blank by folding into a 2-ply unit and the connecting flanges may be readily formed by separating and bending the two plies at the end of the carrier bars. The crossbars upon which the cap sections are actually mounted are preferably formed with upper and lower lugs having inner faces that engage the upper and lower edges of the flanges of the 2-ply carrier bar making interlocking engagement therewith while the flanges themselves provide substantial contact areas that hold the crossbars at right angles to the body of the carrier bar and insure their proper position in the assembling step.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawings in which,

FIGS. 1 and 2 are fragmentary views in perspective showing one end of the carrier bar in relation to one of the crossbars;

FIG. 3 is a top plan view of the carrier bar;

FIG. 4 is a corresponding view in elevation;

FIG. 5 is a view in perspective of the spider shown as secured to the spindle, and

FIG. 6 is a view in perspective of a razor head containing the spider, portions of one of the cap sections being broken away.

The spider of this invention is designed to be incorporated in a safety razor of the type shown in FIG. 6 and which includes in its structure a handle 20, a guard or blade seat 21, and complementary cap sections. In its closed condition, the concave cap sections 22 cooperate with the convex guard 21 to flex the blade and give it ice the proper edge exposure for safe and comfortable shaving. A razor of this general type forms the subject matter of the above-mentioned Muros Patent No. 2,009,272, to which reference may be had for further details of construction and manner of operation.

The spider is herein shown as rigidly secured to the top of a spindle 10 which forms a part of the razor assembly and passes down into the handle 20 wherein a rotary nut, toggle or other mechanism is provided for raising or lowering the spindle and the spider carried thereby. The carrier bar 11, as suggested in FIGS. 1-4, may be conveniently formed from a flat, symmetrical blank died or stamped from sheet metal and then folded or doubled to form an elongated 2-ply body. From this projects downwardly a short, centrally disposed 2-ply stem 12 and at each end a down-turned 2-ply arm 14. The spindle 10 is forked at its upper end to receive the stem 12 and the two are rigidly connected by rivets 13 or by a peening operation.

Each down-turned arm 14 is provided near its lower end with outwardly directed divergent flanges 15 formed by spreading apart the two plies of its folded material. These flanges have vertical outer edges which together present substantial areas or lines of contact that serve to maintain the cross bars 16 accurately positioned at right angles to the carrier bar 11.

Each cross bar 16 is provided at both its ends with inwardly directed integral pivot pins 17 which provide pivotal connection for the cap sections 22 as shown in FIG. 6 and in the patent above identified. Each cross bar has also in mid position a pair of integral lugs 18 bent over from the top and bottom of the cross bar or stuck out therefrom and spaced apart vertically to receive between them the divergent flanges 15 of the carrier bar 11. A step 14' is formed in each arm 14 just above the flanges 15 of a height substantially equal to the thickness of the lugs and the flanges 18 may suitably be notched as shown to receive the step.

In assembling the cross bars '16 upon the arms 14, the flat inner face of the bar is first pressed against the contact areas provided by the outer edges of the divergent flanges 15 with the lugs 18 extending above and below the flanges. The cross bars are thus positively located in the exact position desired and while they are so held the outer marginal portions of the lugs 18 are swaged or bent inwardly against the flanges 15 or the body of the arm 14, thus interlocking the parts together in a positive manner.

Having thus disclosed my invention and described one embodiment thereof in detail, what I claim as novel and desire to secure by Letters Patent in the United States is:

1. A spider for a safety razor of the clam-shell type, comprising an upright spindle having a transverse carrier bar secured to its upper end, the said bar having downturned arms terminating in divergent and upright flanges, and cross bars having spaced lugs embracing said flanges and being folded into engagement with intermediate portions of said arms behind the said divergent flanges.

2. A spider for a safety razor, comprising an upright spindle, a transverse carrier bar secured to the upper end of the spindle and constructed of sheet metal folded above the top of the spindle into a two-ply unit terminating at both ends in down-turned arms, the plies being separated at the ends of said arms into divergent flanges, and cross bars having spaced lugs overlapping said flanges and being interlocked therewith.

3. A spider for a safety razor, comprising an upright spindle, a two-ply carrier bar of sheet metal secured to the spindle and having at both ends angular flanges formed in each of its plies, and cross bars held at right angles to the carrier bar by substantial areas of contact provided 3 by said flanges, said cross bars having spaced projections interlocked With the carrier bar inwardly with respect to the flanges.

4. A spider for a safety razor, comprising an upright spindle, a two-ply carrier bar of sheet metal secured to the spindle and having at both ends angular flanges formed in each of its plys, and cross bars held at right angles to the carrier bar and including upper and lower lugs having parallel inner faces that engage the upper and lower edges of the two-ply carrier bar, said lugs being 10 interlocked with said flanges.

5. A spider as described in claim 3, further character- 4 ized in that the angular flanges at the ends ofthe two-p1y carrier bar are spread apart with the end surfaces thereof abutting said cross bars to present contact areas that hold the cross bars at right angles to the body of the carrier bar, and that said project-ions are folded behind said flanges.

References Cited in the file of this patent UNITED STATES PATENTS Shnitzier et a1. June 5, 1956

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