US1644187A

US1644187A - Safety razor

Info

Publication number: US1644187A
Application number: US663996A
Authority: US
Inventors: Clarence H Hapgood
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-09-21
Filing date: 1923-09-21
Publication date: 1927-10-04
Anticipated expiration: 1944-10-04

Description

Oct. 4 1927.

Y C. H. HAPGOOD SAFETY RAZOR Filed Sept. 2l, 1923 mmmmm.

Y- A la 3 Sheets-Sheet 1 ao: yum" C. H. HAPGOOD SAFETY RAZOR Oct. 4,1927. 1,644,187

Filed Sept. 21, 1923 3 Sheets-Sheet 2 Clarence bf /a/oyaod Oct; 4 1927.

C. H. HAPGOOD SAFETY' RAZOR Filed Sept. 21. 19,23 '5 Sheets-Sheet 5 l N V EN TOR. C /arezrce /J Ha/sgbo CZ TORNEY Patented Oct. 4, 1927.

naires STATES 'PATENT OFFICE. y

Application 'led September 21, 1923. Serial No. 663,996.

This invention relates to lsafety razors and has for its primary object the provision of a handle and holding` frame pivotally supporting the blade for honing and stropping Oper'- 5 ations and adapted to receive a detachable Iguard pate for supporting the blade during the shavingv operation.

Another object of the invention is the arrangement of a resilient clamp for detachably securing the blades inv correct position for honing, stropping and shaving, the clamp beingmounted upon a pivoted carrier adapted to engage the surface of a hone or strop and `uide the blade for eiiicient sharpening"7 5 the carrier holding the clamp kat an angle rendering it possible to strop the blade upon a soft leather strop with the edge of the blade foremost against the strop the same as in honing.

A further object of the invention is the provision of a detachable guard member j adapted to fit over the blade and besecured upon the holding` frame in varying positions to control the angular relation of the blade n to the handle.

Other objectsl and advantages will be apparent from the following description wherein reference is made to the accompanying drawings illustrating preferred embodiments of my invention, and wherein similar reference numerals vdesignate p similar parts throughout the several views.

In the drawings n Fig. I is a front elevation of a safety razor constructed in accordance with my invention.

Fig. II is a side elevation-thereof.

Fig. `III isan end view thereof looking toward the blade end f the razor.

Fig. IV is a transverse .sectional view taken substantially on the line IV-IV of Fig. I. with varying positions of the blade and guard member shown in dotted lines.

Fig. V is an end view of the detachable guard Amember. n

Figs. VI and VII are det-ail sectional views taken substantially on the lines VI-VI andr VII- VII of Fig. III.

Fig. VIII is a side elevation of the holder frame and associated parts with a modified formof lguard member. i l f j Fig. IX is a rear elevation of this guard member. y l' Fig. X is a side elevation thereof.

Fig. XI is a detail sectional view taken --substantially on the line XI-XI ofFig I. VFig. XII is a front elevation of my improved razor constructed for'use with double edged blades of the Gillette type.

Fig. VXIII is a central sectional view taken substantially on the line XIII-XIII of Fig. XII. v

lFig. XIV is a detail sectional view taken substantiallyon the line -XIV-XIV of Fig. XIII. Y

Fig. XV is an end view of my razor with provisions for adjusting the blade relatively to the guard plate. v Fig. XVI is a side elevation thereof.

Fig. XVII is an enlarged detail view showing in side elevation the guard teeth and blade adjusting means, and

Y Fig. XVIII is a detail sectional view taken substantially on the line XVIII-XVIII of Fig. XVII. i

Referring nowjto the drawings, the numeral designates a handle and 6 a holder lframe detachably ksecured thereto, as by the threaded stem 7. The holder frame is sub4 stantially U-shaped and provided with threaded apertures 6a adjacent the ends of its tines for thel reception of fulcrum screws 8 '(see Fig. VI), the inner extremities of the fulcrum screws being rounded and adapted tojit within the apertured ends of the blade carrier 9 to permit ready rotation 0f the carrier, as hereinafter described. Encircling the carrier 9 is a clamp 10 of resilient metal, the ends of'which extend radially from the carrier 9 and are adapted to securely hold a razor blade 1l during the honing or stropping operations as well as during the shaving operation. To Vco-operate with blades that have notches adjacent their sideedges. as do many of the single edged blades now in general use. I preferably form the clamping jaws 10a of the clamp with inturned projecting portions adjacent their sides, (see Figs. III and VII) the projecting portions fitting within the notches of the blade and serving to position the blade within the clamp. This prevents accidental' movement of the blade within the clamp, and renders it easy torecognize when theblade is correctly positioned. Upon thev ends of the carrier 9 are provided rollers 12 V(note Fig. VI) which serve the purpose of retaining the clampv 10 in correct position'` upon the carrier 9 and also serve to provide a broader tractive surface upon the strop or hone.

The diameter of the rclamp and rollerslQ are so related to the blade carried in the clamp l0 that when they rest upon the surlll) f surface.

face of a hone or' strop the beveled edge of the blade is tangent to the periphery of the clamp and rollers. By virtue of this construction it is possible to move the blade over the surface of the hone or strop with its edge foremost without cutting the strop or hone, even though flexible strops be used.

This is the correct position for sharpening razor blades and has been heretofore used' in honing, but never in stropping, owing to the difficulty of moving a razor blade edge foremost over a flexible strop without cutting into the surface of the strop. The beveled edges of razor blades are ordinarily slanted substantially equally from the sides of the blade, and with suoli blades the movement of the blade over the strop or hone can be made in either direction.

The operation of honing or stropping would accordingly be carried out by merely resting the carrier upon the surface of the hone or strop, which is preferably kept in a substantially horizontal position, and the holder frame alternately pushed and pulled by pressure on the handle 5. The first movementof the carrier upon the surface of the hone or strop serves to turn the clamp and blade to bring the beveled edge of the blade into f-rictional Contact with the hone or strop. This position is then maintained during the remainder of the stroke in one direction, the friction of the carrier against the strop or hone serving to maintain thev edge of the blade in close contact with the As soon as the handle is moved in the opposite direction the friction on the periphery ofthe carrier serves t rotate the clamp and blade until tl e opposite side of the beveled edge of the blade is in frictional contact with the strop or hone, whereupon further movement` in that direction may be made with the beveledzedge in engagement with the surface. These alternate movements over the strop or hone can be continued as long as desired.

l The blade can now be used for shaving, without detaching it from the clamp 10, by the positioning of a guard plate 13 substantially as shown in Figs. I to V. The guard plate 13 as the-rein illustrated comprises a guard member lll having rounded and downturned teeth 15 adjacent one end and Y a securing member of resilient material adapted to snap into position against the clamp and the inner face of the holder frame 6. 'The guard member 14 and securing.

member 13 are preferably welded or otherwise suitably united so as to form a substantiall-y integral piece.. AThe angle at which the bladev 11 is held relatively to the handle 5 may be adjusted to suit the convenience by virtue of a plurality ofl aligned apertures 17 in the securing member 13, the .central apertures being ,adaptedvto fit overthev threaded stem 7 of the handle 5 and the side apertures being adapted to t over studs 16 extending from the inner surface of the holder frame 6, substantiallyy as shown in Fig. I. The endmost guard teeth 15 are preferably bent upwardly and over the sides of the blade to serve in positioning the blade upon the guard member and aid the projecting portions of the clamping jaws in preventing lateral movement of the blade within the clamp. The free extremity of the securing member 13 is .preferably curved to facilitate the positioning ofthe guard plate within the holder frame.

In Figs. VIII to XI inclusive is shown a slightly modified embodiment of the guard plate whereby the razor blade is positioned within the holder frame for shaving. This form of guard plate comprises substantially the same guard member le welded or other-l wise secured to a metallic strip 130 curved i at its upper extremity tov snugly fit over the clamp. and formed with apertured ears 131 for t-he reception of a pivot pin 132 upon which is pivotally connected a positioning strip 133 by apertured ears `1311. AV coil spring 135 is mounted upon the pivot pin 139l with its ends engaging the strips 130' and 133 respectively to normally force them apart. The positioning strip 133 isprovided with a plurality of spaced' aligned lopenings 136 for adjustment relatively to the holder frame 6. As illustrated in Fig. XI the adjusting openings k136 may be arranged adjacent each side of the strip'13`3 to co-operate with pins 137 on' the holder frame, a central slot 138 being, utilized to enable adjustment relatively to the threaded stem 7 whereby the handle 5 is secured to the holder frame. v y i In Figs. yXII to XIV inclusive is shown an embodiment of the invention whereby double edged blades of the Gillette type may be employed.V Substantially the same holder frame, guard member and carrierar'e employed .as illustrated in Figs. Ito VVII inclusive, but the clamp l is formed with one of its jaws 101 of greater length than the other jaw and provided with spaced raised portions 102 to fit within the aper-Y tures in the blade 103. The raised portions 102 correctly position the blade 103 within the clamp and are spaced a Sufficient d is- .tance from lthe-carrier 9 to preventthe edge of Ythe blade within the cla-mp from contacting the carrier. Y If desired, Vprovision may be made for slightly moving thevblade toifvard or aifvay from the central teeth ofthe guard member. In Figs. vXV toXVIII I have illustrated va preferred embodiment of such blade" moving means. The en'dmost lguard teeth are provided with downturned apertured ears 150 for the reception f the stub shafts 151 eccentric'ally -`Yvmounted on the Vadjiretin-gi; roller 152, This roller is preferably' 60nlll) structed with a plurality of faces spaced at different distances from the stub shafts 151, whereby, whenthe several faces are brought into contact with the lower surface of the central guard teeth 15, the endmost teethr 15 are flexed relatively thereto, substantially as shown in Fig. XVII, the flexing ofthe endmost teeth serving to move the blade slightly on its pivotal mounting on the carrier. A linurled handle 153 is provided for ready rotation of the adjusting roller 152. The adjusting roller 152 is carried by the guard member V14E and may be removed with the guard member when it is desired to strop or hone the blade. After the desired adjustment of the blade relatively to the guard teeth is once secured, it may be held indelinitely, even though new blades be utilized with the guard member.

lhile it will be apparenty that the illustrated embodiments of my invention herein disclosed are well calculated to adequately fulfill the objects and advantages primarily stated, it is to be understood that the invention is susceptible to variation. modification and change within the spirit and scope of the subjoined claims.

Having described my invention, I claim: l

1. A safety razor having a holder frame, a blade carrier pivoted therein, a beveled edge blade adapted to be secured in the carrier with the beveled edge portion of the blade tangential to the periphery of the hub portion of the blade carrier, anda detachable guard plate arranged to engage the frame,y

the carrier, and the sides of the blade to se# cure the blade and'carrier in predetermined angular relation to the holder frame.

2. A safety razor having a holder frame, a blade carrier pivoted therein, means for securing a blade in the carrier with the beveled edge portion of the blade tangent to the periphery of the blade carrier, and a detachable guard plate adapted to secure the blade and carrier in predetermined angular relation to the holder frame, the guard plate being provided with a series of adjusting apertures for varying the angular relation of the blade and holder frame.

3. A safety razor having a holder frame. a blade carrier pivoted therein. a blade, and a detachable guard plate adapted to engage the edges of the blade. the carrier and the holder frame, the guard plate having a plurality of adjusting openings and a stud upon the holder frame adapted to fit Within said openings.

4. A safety razor having a holder frame. a blade carrier pivoted therein, a blade, and a detachable guard plate adapted tor engage the edges of the'blade, the carrier and the holder frame, and means upon the blade carrier for correctly positioning `the blade therein. i

5. A safety razor having a holder frame,

detachable blade, and means for securing the Y blade and carrier lin predetermined angular relation` to the holder frame comprising a guard plate adapted to engage the blade, the clamp and holder frame, and means for adjustably securing'the guard plate upon the holder frame. l

6. A safety razor having aholder frame, a rotatable'carrier pivoted therein, a blade securing clamp mounted'v upon the carrier, a detachable blade, andbmeans for securing the blade and carrier in predetermined angular relation to the `holder frame comprising a guard plateA adapted to engage the blade, the clamp and holder frame, and means to warp the guard plate for moving the blade relatively to the guard plate.

7. A safety razor having a holder frame, a

rotatable carrier pivoted therein, a blade securing' clamp mounted upon the carrier, a detachable blade, and means for securing the blade and carrier in predetermined angular relation to the holder frame comprising a guard plate adapted to engage the blade and holder frame, and means for warping the guard plate for adjusting the distance of the edge of the blade from portions of the guard plate.

S. A safety razor having a holder frame, a rotatable carrier pivoted therein, a blade securing clamp mounted upon the carrier, a detachable blade, and means for securing the blade and carrier in predetermined angular relation to the kholder frame comprising a guard plate adapted to engage the blade and holder frame, and an eccentric mounted upon the guard plate to move portions' of the guard plate relatively to the remainder thereof to move the blade toward or from Y the major portion ofthe guard plate.

9. A ysafety razor having a holder frame,

a handle adaptedy to be secured thereto, aV

carrier pivoted in the holder frame, a clamp mounted on the carrier, rollers secured on the carrier at each end of the clamp, a blade vi on llt-i adapted to be secured in the clamp, and a detachable guard plate adapted to secure the blade in predetermined angular positions relatively to the holder frame. I

10. A safety razor having a'holder frame,

a handle adapted to be secured thereto, a

having teeth adapted to engage the edge of the bladeand a securing member adapted to engage the holder frame.

11. A safety razor having Va holder frame, l

a handle adapted to be secured thereto, a carrier pivotedin the holder frame, a clamp mounted on the carrier, rollers `secured on detachable guard member comprising a plate .the carrier at each end of the clamp7 a blade fadapted to be secured in the clamp, and a' detachable guard member comprising a iplate having teeth adapted to engage the edge of the blade and a securing member adapted to engage the holder frame, andmeans carried by the guard member for adjusting the position of the cutting edge of the blade relatively to the guard teeth.

12. A safetyrazor having a holder frame, a handle adapted to be secured thereto, a carrier pvoted in the holder frame, a clamp mounted on the carrier, rollers secured 0n the carrier at each end of the clamp, a blade adapted to be secured n the clamp, and a detachable guardl member Comprising a plate having teeth adapted to engage the edge of the blade and a securing member adapted to engage the holder frame, and a roller ec` oentrcally mounted on the guard plateand 20- adapted to move the blade toward or from the guard teeth.

In Witness whereof Ilhere'unto set my hand. l

CLARENCE H. HAPGOOD.