US1361266A - Razor - Google Patents

Description

L. H. LA CHANCE AND G. BROWNING.

RAZOR.

APPLICATION FILED JULY 8. 1920.

Patented Dec. 7,1920.

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RAZOR.

APPLICATION Fl LED JULY 8, 1920.

Patented Dec. 7, 1920.

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- LEANIDER .11. LA. CHANGE AND GEORGE BROWNING, OF CHICAGO, ILLINOIS.

RAZOR.

To all whom it may concern Be 1t known that we, LEANDER H. LA CHANCE, a citizen of the Un ted States, and

Grnonen Bnowxmo, a subject of the King of thereof.

The purpose of this invention is to provide an improved construction of safety razor in which the blade is given an end-.

wvise reciprocation by which a draw-cut is obtained from a direct forward movement of the blade over the surface to be shaved. It consistsin the elements and-features of construction shown and described, as indicated in the claims.

In the drawings:

Figure 1 is a face side elevation of a razor embodying this invention.

Fig. 2 is substant ally an elevation from the opposite side showing the handle cut in section as to the line, 22, on Fig. 3.

Fig. 3 is a section at' the line, 3-8, on Fig. 1,

'Fig. at is an end elevation showing the housing partly broken away to disclose interior parts.

Fig. 5 is a section at the line, 5-5, on Fig. 4.

Fig. 6 is a section at the line 6-6, on Fig. s

' Fig. 7 is a plan view of the blade.

Fig. 8 is a plan view of the comb guard. Fig. 9 is an im'erted plan view of a modification for cheapening the construction and facilitating the assembling.

Fig. 10 is a plan view of the guard and a a bracket rigid therewith pertaining to said modification.

Fig. 11 is a section at the line, 1111, on

Fig. 10.

Fig. 12 is a plan view of a bracket and imcriorly formed parts-including securemcnt for the handle.

Fig. 13 is a partly sectional plan view of the cover or retaining plate, section being made axially througha certain spring housing which it carries.

Fig. 14 is an end elevation of the guard plate and bracket rigid therewith with the roller mounted as to one of its bearings on said bracket.

Specification of Letters Patent.

I Application filed July 8, 1920. Serial No. 394,669.

Fig. 15 is an end elevation of the remainder of the structure assembled ready for completing the assembly by properly engaging the two assemblies of Figs. 14 and 15.

Fig. 16 is a section at the line, 16-46, on Fig. 1.

The razor shown in Figs. 1 to 8 inclusive of the drawings comprises a mount which constitutes a housing or inclosure for the operating parts havlng a-handle, 2, projecting obliquely with respect to the plane of the blade mounted upon one wall ofthe housing as hereinafter described. The housing is open at the forward side, meaning the side in the direction of the movement of the razor in shaving, and is closed at what may be called the face side,-that is, the side toward the face in the operation of the razor, by the guard plate, 6, which constitutes an essential element of the mount .and which has its forward edge in the form of a comb as shown at 6". This guard plate extends beyond the chamber of the housing at both ends, the projection at each end being nearly equal to the length of the housing chamber, to form a seat upon which the blade is lodged and reciprocated in its operation as hereinafter described. The guard plate is positioned on and secured to the remainder of the mount by a rectangular projection, 6*, at the rear which extends betweenthe lugs of the retaining plate hereinafter described, and has its rear edge abutting against the rear wall of the housing which is projected up from the end walls at 1? to form a stop and positioning. means for the guard plate. A post, 10, rigid with the bottom of the housing and standin up within the chamber of the housing a ords means for securing the guard plate by means of the screw, 12, set through a countersunk aperture, (i in the guard plate, the

1 head of the screw being flush with the outer or face side of said plate. At the forward side the end walls, 1", 1 of the housing being the end brackets of the mount, are extended to form lugs, 1 1, to afford jour nal bearings for a crank shaft, 3, having intermediate its ends a crank, 3, and rigid with it at opposite sides of the crank, rollengaging bearings respectively in the one side wall of the housing, and in the guard plate, 6. For positioning and guiding the pitman to maintain its rack, 4", in engagement with the pinion, the post, 10, is reduced in diameter at its forward end by. a rabbet bounded by the faces, 10 and 10, upon which respectively the face and the edge opposite the rack of the pitman, 4, are seated in the reciprocation of the pitman by the crank.

The guidance and retention of the pitman in its proper path is completed by extending it past the pinion under the pintle, 11, by which the retaining plate, hereinafter described, is hinged to the mount. The pinion, 5, is provided with what may be called 'a crank pin or eccentric pin, 5, which projects through an arc slot, 6 in the guard plate, 6, and engages a transversely extending slot, 7", in the blade, 7, which is lodged upon the outer face of the guard plate, 6,

and guided for longitudinal reciprocation thereon by means of studs, 6, projecting from the guard plates andengaging longitudinal slots, 7, in the blade. For retaining the blade on the outer face of the guard plate there is provided .a hinged retaining plate, 8, which is hinged to the mount by means of lugs, 8, folded back from the opposite sides of the rearward projection, 8 with which the retaining plate is provided,

the lugs embracing the mount at therear I part and being pivoted thereto by the pintle, 11, above mentioned which for convenience of assembling is made in'the form of a bolt which has a reduced threaded end, 11 and slotted head, ,11", and is inserted'through a suitably large aperture'with which the right hand lug, 8, is provided, and through corresponding apertuies in the end wall of the housing, and screwed into a smaller threaded aperture in the opposite lug, 8, as seen clearly'in Fig. 5, being made fast by screwing it into the shoulder formed by the reduction of the threadedend. The lugs, 8 8 are spaced apart sufiicientlyto provide a small clearance, as seen in Fig. 5, between the right hand end lug and the end, 1, of the housing, and a coiled spring, 9, is coiled about the pintle between said end and said lug, acting to hold the opposite lug snugly against the opposite end, 1*. Said opposite lug is provided with a slight projection, 8, on its inner face, which may be made by merely striking the metal through with a punch from the outer side about half the thickness ofthe metal, thereby producing a projection equal to half the thickness of the metal at the inner side. This projection engages a hole, 11, in the end, 1, said projection and hole being relatively positioned so as to be engaged when the retaining late is in plate-retaining position as seen in *igs. 3 and 4. The retaining plate has at its opposite ends slight projections, 8", which lodge upon the outer face of the guard plate and thereby space the retaining plate away from the guard plate sufliciently to insure free path for the blade in its reciprocation without binding pressure between the retaining plate and guard plate. Preferably the ends of the guard plate are cut back slightly as seen at 6, so as not to project at either end beyond the path of the blade in its reciprocation; and so that the blade is very slightly longer than its seat on the plate, so that each stroke of the blade will clean off from the face of the guard plate any lather or other material which may have lodged thereon; and also for convenience of applying and removing the blade. The projections, 8 of the guard plate, which are most conveniently formed by bending down the sheet metal of which the guard plate is most desirably made, affords convenient means by which the user may press the'retaining plate, 8, longitudinally to disengage the projection, 8, from the aperture, 11, of the housing for releasing the retaining plate to permit it to be folded back for removing the blade.

Upon considering the construction above described, it will be seen that in the operation of shaving the movement of the tool 'over the face, rotating the roller, 4, and reciprocating the pitman, 4 oscillates the pinion, 5, and causes longitudinal reciprocation of the blade while it isadvancing directly over the surface to be shaved,'and that thereby without any attention of the operator, there results a draw-cut of the blade, greatly improving its cutting action. In order that the blade may be reversed side for side, so as to present either side to the face, as is desirable in order that advantage may be taken of slight differences which sometimes result from the method of honing, in relation of the cutting edge tothe one face or the other, the blade is provided with two apertures. 7 symmetrically situated with respect to a middle transverse line so that either aperture may be engaged by the crank pin, 5', of the pinion.

I am aware that heretofore razors have beenmade having a roller for rolling over the surface to be shaved, and having connections by which a longitudinal reciprocation of the blade is derived-from this rolling. But in all such constructions heretofore, the connection of the roller with the blade for reciprocating the latter has not been such as to afford what I regard as an adequate length of stroke to the blade, with perfect clearance between the roller and the blade which "is necessary for preventing the device from becoming clogged with lather and hair, and with the roller in such position as to permit an adequate range of tilting of the blade with respect to the surface being shaved, as required by convenience of operation, withoutliability of lifting the blade from the surface by fulcruming over the roller. The present device avoid-s all these defects of and objections to former devices employing the roller, for alike purpose.

In Figs. 9 to 16 inclusive, there is illus- I trated a form of this invention which is compactness and consequent lightness, renderingit more acceptable-to the user.

To these ends the construction differs from that shown in preceding figures, as

will appear from the followingdetailed description.

The mount is reduced to the guard plate and brackets, 101, 102, in which the roller member, 4, is journaled and projections rigid with said brackets. One of said brackets, 101, is rigidly secured to the guard plate.

106; and the other bracket, 102, is formed integrally with a tie plate, 103, which engages the ends-of two studs, 104 and 105,

which are rooted rigidly in the guard plate, 106, the stud, 104, serving as the journal shaft for the pinion, 5, while the other stud, 105, corresponds tothe part, 10, of the first described construction, and has a groove, 105 for guiding engagement of the pitman, 4, at the edge opposlte the rack, 4", thus dispensing with the guidance and retention of the rack which in the eariler described figures is afforded by theshaft, 11. The integral member comprising the bracket, 102, with the tie plate, 103, has the back flange, 112, formed by folding the sheet metal of ,which said integral member is-formed at a right angle to the bracket, 102, the tie plate being formed by folding from the back plate in a plane at right angles both to the bracket, 102, and to the back flange, 112. The handle is attached by means of a threaded stud 113, rooted in the tie plate, 103, and inclined atan angle to said tie plate suitable for the protection of the handle.

, The roller member and crank shaft in the form shown inthese Figs. 9 to 15, is made substantially unitary,-each of the two separate roll members having at the outer end a trunnion or pintle projection, 4, the two roll members being rigidlyconnected by the and the bracket, 101, which is rigid with the guard has alined with said hinge pintle, a threaded hole, 116.

The cover plate is preferably made so as to afford clear space between it and the guard plate for unhindered reciprocation of the blade, and at the same time for holding the blade suitably seated on the guard plate, by the detail construction as ollows: At the forward edge it is bent at an oblique angle at 117 a to form a lip, 117 closely approaching or hearing lightly upon the blade lodged on the guard plate. It is folded at right angles at 117 to form the back flange, 117, and again folded at right angles at 0pposite ends to form the lugs, 117, corresponding functionally to the lugs, 11, of the other form, for embracing between them brackets, 101, 102, corresponding to lugs, 11, of the other form.

The blade-guiding studs, 6, are enough higher than the thickness of the blade to space the forward lip, '117", of the cover plate away from the guard far enough to insure easy reciprocation of the blade; and for insuring the proper seating of the blade on the guard plate'at the rear part of its width, the cover plate has about midway in its length an inwardly projecting stud, 117

whose end when the cover plate is at closed;

position and stopped by the studs, 6, is spaced from the cover plate very slightly more than the blade thickness.

The lug, 117 adjacent to the bracket, 102, has a housing, 117 ,.for a coiled spring, 9", corresponding in function to the coiled spring, 9, of the other form, reacting against the pintle, 115, which intrudes for yieldingly holding the opposite lug, 117, of the cover plate against the opposite bracket, 101. For engagement of the projection, 8, formed on that lug, 117, with the aperture, 11, formed in the bracket, 101, corresponding to the similarly designated aperture in the other form.

The form shown in these Figs. 9 to 16 is readily assembled, the unitary member comprising the bracket, 102, tie plate, 103, and back flange, 112, is engaged with the covermember by inserting the pintle, 115, in the spring housing, 117 of the lug, 117 The pinion is mounted on the stud, 104, the rack is engaged with the pinion, and the roll pintle at the side at which the rack teeth face is engaged with the bracket, 101, at the end, and the assembled cover plate, 117, and unitary members, 101, 102 and 103, may then be'readily placed in position on the guard plate upon which the parts are already asscrewed onto the threaded stud, 113, pro-.

vided to receive it on the tie plate, and. the device is in condition to receive the blade by folding back the cover plate as in the other form, and engaging the blade by the 1 slot, 7, with the studs, 6", and by one of the slots, 7 with the operating eccentric pin or crank pin,

. lVe claim v 1. In a safety razor, in combination w1th a fixed guard and a blade having 1ts cuttmg edge adjacent to the guard, a roller mounted in front of the guard; a crank and pitman operatively associated with the roller for reciprocation of the pitman crosswise of the cutting edge of the blade; a rack on the pitman; a pinion engaged with the rack and having an abutment engaging a transverse slot in the blade for reciprocating the blade by the rotation of the pinion.

2. In a safety razor, in combination with a fixed guard and a blade mounted for reciprocation of the cutting edge adjacent to the guard; a roller mounted in front of the guard; a crank and pitman operatively associated with the roller for reciprocation of the pitman'transversely of the cutting edge of the blade; a rack on thepitman; and operating connections between the pinion and blade for converting oscillatory motion of the pinion into longitudinal reciprocation of the blade.

3. In a safety. razor, in combination with a fixed guard and a blade mounted for reciprocation of the cutting edge adjacent to the guard; a roller in front of the guard; a crank and pitman operatively associated with the roller for reciprocation of the pitman crosswise of the cutting edge of the blade, and operating connections from the pitman to the blade for converting the crosswise movement of the pitman into longitudinal movement of the blade.

4. In a safety razor, in combination with a mount, a guard plate fixed on the mount, a blade mounted and guided for reciprocation on the outer face of the guard plate, a roller journaled on the mount at the forward side of the guard plate above the plane of the blade; a crank and pitman operatively associated with the roller for reciprocation of the pitman crosswise of the cutting edge of the blade, the. pitman extending back under the guard plate; operating means under the guard plate comprising means through the guard plate for reciprocating the blade, the blade having apertures for engagement of said operating means symmetrically s ituated with respect to a medial transversefdine; j whereby the blade may be retaking versed endwise for presenting either face to the surface to be shaved. I 1

5. In a safety razor, in combination with a mount comprising ajguard-plate fixed on the mount; a blade mounted on, the outer face of the guard plateand providedv with means by which it is guided thereon for longitudinal reciprocation of the pitman crosswise of the cutting edge of the blade, the pitman extending back under the guard plate; operating connections underthe guard plate having means projecting'through the guard platefor engaging the blade to reciprocate it; a blade-retaining plate hinged to the mount rearward of the path of reciprocation of the blade and back of the plane thereof, and a spring-operated catch at the hinged side of the blade-retaining plate for 'jection disengageably by thrust of the plate against the reaction of the spring.

7. In a safety razor in combination with a fixed guard, a blade seated for reciprocation on the guard and mean on the guard for guiding it in such reciprocation; a roller carried by the guard for rolling contact with the surface to be shaved; a crank and pitman operatively associated with the,

roller for reciprocation of the pitman transversely of the direction of reciprocation of the blade on its seat, and operating connections from the pitman to the blade for convertin said transverse movement of the pitman 1nto longitudinal movement of the blade.

. 8. In a safety razor having a guard plate for seating a reciprocating blade; a roller carried by the guard plate for rolling contact with the surface to be shaved;a cover;

member between which and-the guard plate the blade is seated for reciprocation; bearing parts for the opposite ends of the roller and for the opposite hinge" pintle of the cover member, one of said bearing parts being rigid with the guard plate, and the other adapted to be engaged with the cover member, studs mounted'in the guard plate and a plate rigid with said second mentioned bearing member? adapted to be engaged with said stud; operating connections from the roller member for reciprocating.

the blade on the guard plate, comprising an operating projection which protrudes through the guard plate for engaging the blade, whereby the cover plate and parts assembled thereon may be applied to the guard plate and parts assembled thereon for complete assembling of said device, and a hinge pintle for the opposite end of the cover plate, engageable therewith and with the fixed bracket on the guard plate, for the completion of such assembling for securing the-parts together. I

9. In a safety razor, in combination with a fixed guard, a blade seated for reciprocation on the guard; means on the guard plate for guiding it in such reciprocation; operating means for reciprocating the blade, situated at the opposite side of the guard from that on which the blade is seated and guided, and comprising ablade-engaging projection extending through an aperture in the guard to reach the blade, and a hinged cover plate for retaining the blade on the guard, said blade-guiding projections extending through the blade for stop ping the cover plate and spacing its forward edge away from the guard to insure free space for the reciprocation of the blades between the guard gand cover plate.

L0. In a safety razor, in combination with a fix'ed guard, a blade seated for reciprocation on the guard means ,on the guard plate for guiding it in such reciprocation; operating means for reciprocating the blade, situated on the opposite side of the guard from that on which the blade is seated and guided, and comprising a blade-engaging projection extending through anaperture in the guard to reach the blade; an imperforate hinged 'cover plate for retaining the blade on the guard, and means for spacing it off therefrom at the forward edge adequately to permit free reciprocation of the blade between the guard and cover plate, and a stud projecting inwardly from the retaining plate near the rear edge and middle part ofthe length of the blade for retainlng the blade close to the seat at said rear part of its width. b

11. In a safety razor, in combination with a fixed ard and a blade mounted for reciprocation of its cutting edge adjacent to the guard; a roller mounted in front of the guard; a crank and-, pitman ope'ratively associatediwith the roller for reciprocation of the itman transversely of the cutting edge I of t e blade; a rack on the pitman'and op-- erating connections between the pitman and blade forconverting the oscillatory motion of the inion to longitudinal reciprocation of the lade, and gulde means for the pit.- man comprising a stud having a transverse slot at one side for the edge of the pitman,

the opposite sides of the slot being cut away to reduce them to V-shaped projections between which the pitman is guided in its reciprocation. I

In testimony whereof we have hereunto set our hands at Chicago, Illinois, this 29th day of June, 1920. i

LEANDER H. LA CHANCE. GEORGE BROWNING,

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