US2455877A - Safety razor - Google Patents
Safety razor Download PDFInfo
- Publication number
- US2455877A US2455877A US568424A US56842444A US2455877A US 2455877 A US2455877 A US 2455877A US 568424 A US568424 A US 568424A US 56842444 A US56842444 A US 56842444A US 2455877 A US2455877 A US 2455877A
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- US
- United States
- Prior art keywords
- guard
- blade
- clamp
- edge
- arcuate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
- B26B21/08—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving changeable blades
- B26B21/14—Safety razors with one or more blades arranged transversely to the handle
- B26B21/18—Safety razors with one or more blades arranged transversely to the handle involving blades with two cutting edges
Definitions
- This invention relates to improvements in safety razors particularly adapted for use in pre- ,paring patients for surgical operations.
- a further object of the present invention is to provide a safety razor adapted to be used in hospitals for shaving patients preparatory [to surgical operations requiring the removal .of
- Fig. 1 is a perspective view of the shaving device.
- I Fig. 2 is a detail sectional view of theclamp member of the device. The view is taken along the line 2-2 of Fig. 6.
- perforation corresponding to the perforation I comprising. the spaeed openings 25, 26 and 21 and the connecting 'slot'28 in the guard.
- the longer sides of the blade provide the two cutting edges 3
- clamp 40 urges the blade against the platform; of the guide.
- this clampv 40 is of rectangular shape similar in proportions but narrower and shorter than the guard 20. In fact the clamp is narrower than the blade and is shorter than the slots 22 and 23 in the guard.
- the 'innerfsurfaceM' which engages the blade: 30 when the device is assembled, is transversely arcuate as shown in Figs. 2 and 5.
- FIG. 3 is an end view of the blade member of 2 5 in proper'positionon the clamp.
- the ribs 42 and the device are provided at eachcorn'e'r of the clamp'there is provided a small lug extending from this side of the clamp, said lugs engaging the ends of the blade when the device is assembled thereby. to hold theblade Fig. 3 is an end view of the blade member of 2 5 in proper'positionon the clamp.
- Fig. 4 is a transverse section of the guard member of the device, taken along the line 4- -4 of Fig. 7.
- Fig. 5 is a cross section of the assembled device, 30.1
- Fig. 6 is an inside view of the clamp memben
- Fig. 7 is a plan view of the guard member.
- Fig. 8 is an end view of the assembled device.
- the numeral 20 designates the guard member of the device, detailedly illustrated in Figs. 4 and '7. 'It is of rectangular shape and arcuate t'rans- 4Q versely as at 2!.
- the guard 20 has two elongated slots 22 and 23, each one adjacent to and parallel with a longer edge of. the guard. E'ach. slot terminates adjacent a shorter, arcuate edgeof the screw stud 43 extend into and through the perforations in the blade identical to the per- ;foratio ns 25, '26, 21 and 28 in the guard platform 24 ,throughwhich said ribs and screw stud also extend when, theclamp and blade are placed upon the guard.
- ⁇ means for urgingth e clamp toward and vagainstqthe blade 30 to press it upon the guard platform 24 is provided by themember or staff which is interiorly' threaded at one end to .receivethe' screw stud 43 of the clamp as shown in Fig.5.
- This st afi 50 forms the handle for the .ishavingdevi'ce aslshown'in Fig. l.
- the p61 4 hasbeen ,mentionedheretofore, the inner tion 24 of the guard, between the two slots Hand .23, is flat. It has three spaced, circular perfora tions 25, 26 and 21 connected together'byi an elongated slot 28.
- the lines 29 and 30 indicate surface 4
- Thecurvature ofthis surface is of such degree that when the clamp is drawn toward the guard the blending juncture between the flat plane of 59 by operation of handle 50 so that the blade 30' is the guard portion or platform 24 and 'the re spective arcuate ends of the guard.
- the longer portions of the guard between each slot andits adjacent guard edge are curved to coincide with the arcuate end portions. This is clearly il 1us'-.
- the flat platform portion 24 of the guard has the blade 30 clamped thereupon when the shaving device is assembled for use. This blade is .clampedagainst the platform 24 of the guard,
- the "razor may be a mass of long shaven hair may pass Without clogging.
- the blade when flexed makes a line contact with the sharp outreiige adjusted to permit flexing of the blade aWay from -1 its guard and thereby increase the spacing.
- This destroys the safety factor of the razor "by 'iifoving the cutting edge of the blade out of of the guard platform 24 as at 44, tli'rebyelimc -10 the-properposition relative to the uard in which inating a pocket in which s l aven hair could accumulate and thus cause nagging.
- the outer surface of the clamp 40 is trans versely arcuate as shown in Figs. 2 and 5. This position the proper degree of safety is provided.
- Applicants shaving device is particularly designed that the cooperating guard and clamp are so fashioned that the blade is flexed to hold its curvature is of such a radiu s that the'line ex- 15 vcutting edge a substantially greater distance d t ee cihe e a 's i il iif rlt e e its l ie ,rl o mei t me -gum 2o.
- Applicant's invention therefor tenures-an ir'nprovedsh'aving device capable of removing by s havi'ng a dense-growth of hairgwithout 'bedfnirilg fp arable to that 0f the ordinary "safety time adaiate'd only to shave short a hair *stu'bbles on' the face.
- a shaving device comprising in combination, a rectangular, transversely arcuate guard provided with two elongated slots each parallel to and alongside a longer edge thereof, the portion of the guard between said slots being flat; a rectangular blade, the two longer sides thereof providing cutting edges, the blade being shorter in length than the slots in the guard, the width of the blade being substantially equal to the distance between the two outer edges of the guard slots;
- a rectangular clamp less in width and longer than the blade but shorter than the guard slots said clamp having an inner surface transversely concaved, for engaging and pressing the blade upon the flat portion of the guard to flex it so that each cutting edge thereof is no less than forty thousandths of an inch from the adjacent surface of the guard slot, the outer edge of the clamp being transversely arcuate, the curvature being of such a degree that the edges of the blade and the guard lie on the extended line thereof; and means for drawing the clamp upon the guard to squeeze and flex the blade therebetween, said means providing a handle for the device.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
Description
Dec. 7, 1948.
O. RASMUSSEN SAFETY RAZOR Filed Dec. 16, 1944 INVENTOR OL/IF RASMUSSE/Y ATTORNEY Patented Dec. 7, 1948 Olaf Rasmusse'm- Sidnem ohio I Application December 16, 1944, sr'iali Nt. 568,424
This invention relates to improvements in safety razors particularly adapted for use in pre- ,paring patients for surgical operations.
It is among the objects of the present invention to provide a safety razor adapted to remove a e thick growth of substantially long hair without becoming clogged.
, I A further object of the present inventionis to provide a safety razor adapted to be used in hospitals for shaving patients preparatory [to surgical operations requiring the removal .of
densely growing long hair particularly aboutthe abdomen of the patient.
Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferred embodiment of the present invention is clearly shown.
In the drawings:
Fig. 1 is a perspective view of the shaving device.
I Fig. 2 is a detail sectional view of theclamp member of the device. The view is taken along the line 2-2 of Fig. 6.
perforation corresponding to the perforation I comprising. the spaeed openings 25, 26 and 21 and the connecting 'slot'28 in the guard. The longer sides of the blade provide the two cutting edges 3| and 32. Normally the width of the blade from cuttinge'dgetb cutting edge is substantially equal to the distance'betwe'en the two outer edges of the " guardjslots 22 and 23.
projecting rib 42 extends from the inner surface on each side of a screw stud 43 which extend centrally' from this inner side. of the clamp. At eachcorn'e'r of the clamp'there is provided a small lug extending from this side of the clamp, said lugs engaging the ends of the blade when the device is assembled thereby. to hold theblade Fig. 3 is an end view of the blade member of 2 5 in proper'positionon the clamp. The ribs 42 and the device.
Fig. 4 is a transverse section of the guard member of the device, taken along the line 4- -4 of Fig. 7.
Fig. 5 is a cross section of the assembled device, 30.1
taken along the line 5-5 of Fig. 8. v
Fig. 6 is an inside view of the clamp memben Fig. 7 is a plan view of the guard member. I
. Fig. 8 is an end view of the assembled device.
All of the Figures 2 to 8 inclusive are shown at an enlarged scale, the Figure 1 showing theldevice at substantially actual size. z I
The numeral 20 designates the guard member of the device, detailedly illustrated in Figs. 4 and '7. 'It is of rectangular shape and arcuate t'rans- 4Q versely as at 2!. The guard 20 has two elongated slots 22 and 23, each one adjacent to and parallel with a longer edge of. the guard. E'ach. slot terminates adjacent a shorter, arcuate edgeof the screw stud 43 extend into and through the perforations in the blade identical to the per- ;foratio ns 25, '26, 21 and 28 in the guard platform 24 ,throughwhich said ribs and screw stud also extend when, theclamp and blade are placed upon the guard.
{means for urgingth e clamp toward and vagainstqthe blade 30 to press it upon the guard platform 24 is provided by themember or staff which is interiorly' threaded at one end to .receivethe' screw stud 43 of the clamp as shown in Fig.5. This st afi 50 forms the handle for the .ishavingdevi'ce aslshown'in Fig. l.
When the handle'Bfl is screwed uponthe screw stud 43, the end of the handle will engage and to press the blade" 30, thereupon.
the guard as shown in Figs. 7 and 8. The p61 4 hasbeen ,mentionedheretofore, the inner tion 24 of the guard, between the two slots Hand .23, is flat. It has three spaced, circular perfora tions 25, 26 and 21 connected together'byi an elongated slot 28. The lines 29 and 30 indicate surface 4|, orthe surface of clamp engaging the blade is arcuate as shown in Figs. 2 and 5. Thecurvature ofthis surface is of such degree that when the clamp is drawn toward the guard the blending juncture between the flat plane of 59 by operation of handle 50 so that the blade 30' is the guard portion or platform 24 and 'the re spective arcuate ends of the guard. The longer portions of the guard between each slot andits adjacent guard edge are curved to coincide with the arcuate end portions. This is clearly il 1us'-.
trated in the Figs. 4 and 5.
The flat platform portion 24 of the guard has the blade 30 clamped thereupon when the shaving device is assembled for use. This blade is .clampedagainst the platform 24 of the guard,
tive guard slots :22and 23 and held a distance of [no less than'forty thousandths (.040) of aninch from theinner edge of the respective guard slot. Injother wordsgthe curvature of the'inner surshaped similarly to the guard and has a central face I of theclamp 4)) is such that the blade is flexed toward the guard, so that a clearance space of no less than forty-thousandths (.040) of an inch is provided between the cutting edge of the ldlade andfits respectiiie "guard slot edge,
of hair and due to the minute space would clog up with the few long hairs it succeeded to cut. To facilitate cutting of the longer hair by this ordinary razor and par-tially reducing the possithereby p'rovidingan-aniple sfiacthiouh whih 5 bilit'y of itsvb'ecor ning clogged, the "razor may be a mass of long shaven hair may pass Without clogging.
As shown in Fig. 5, the blade when flexed makes a line contact with the sharp outreiige adjusted to permit flexing of the blade aWay from -1 its guard and thereby increase the spacing. This however destroys the safety factor of the razor "by 'iifoving the cutting edge of the blade out of of the guard platform 24 as at 44, tli'rebyelimc -10 the-properposition relative to the uard in which inating a pocket in which s l aven hair could accumulate and thus cause nagging.
The outer surface of the clamp 40 is trans versely arcuate as shown in Figs. 2 and 5. This position the proper degree of safety is provided. Applicants shaving device is particularly designed that the cooperating guard and clamp are so fashioned that the blade is flexed to hold its curvature is of such a radiu s that the'line ex- 15 vcutting edge a substantially greater distance d t ee cihe e a 's i il iif rlt e e its l ie ,rl o mei t me -gum 2o.
theraabrwill notciit; jim verfwhenth "cutting "edgef'df mabradejxtend uptosfam aiginary larc linle ga safe cuttinf pertio of the blade e1;- ltnds beyond the chord to abov as the "fconta line or th f'llIl sii l r h ei q m s en =pl'1 eldtoia' bodytlo shave hairrhe' iaiiip in' anag a to" include theiab'qve "de m "non" plane of the p1 K ass-em 1e21, 6a
do -'the "plea? I p i n r orty-trii'sarrdui (mart an inch "between the "til-aide a rid slot edge through which tli tl'fr' ha'ir nias's ina rreiy "pa'ss Without "clogging,
tgsw inasm eof i h. t w
lare. a would tend to evn "though the "shaving device is "reino'v'irig a dense growth of long hair.
Applicant's invention therefor tenures-an ir'nprovedsh'aving device capable of removing by s havi'ng a dense-growth of hairgwithout 'bedfnirilg fp arable to that 0f the ordinary "safety time adaiate'd only to shave short a hair *stu'bbles on' the face.
:whne the'*embodirnent 0f-the"preent invention as ereihfiis olos'ed, constitutesa prefer" for'fn, I o be -uiide'rst'ood that other forms rni'g'ht be adoptedjall co'ining within the scope of-the cla ihis wl'fichfollow;
What is claimed is as follows: p "1. agitating"deviee eomprismg m co'I-nbirlation, a guard, transversely arcuate and having two tsjlb'ts ath parallel to 'anu adjacent a In'ger edge or "'said guard and terminating adjacent the shorter, arcuate edges thereof, the* middleportion responding surfaces of the arcuate and-fiat porjtions offthe "-guar'd b'ei'ng in tai'igency at the longitudinal center-bf the gi.1ard; '-a""b1ade shorter than the length of the slots and wider than the stat Fig. "to mi ddleportidn or theguard and aanower than 'tl'ie o'ladean'd having an arena-esurfaee eesaete to engage and i'iig'efthe bladetowar 'sa d 'flat portio erase-guard and thereby iing said blade transversely ovensaid portion 'to hold a-Ch ng'edge tfiei'eofnoless t'ha n foit'y thous th an inch ffin the adjacent' ed'ge of iguard" aid clar'ripbir'ignarrower tha'n'and-longer than he 'blade ,yet shorter than the slots in' -th'e '"guaid and' iiieans for;urging*the clainp flex 'it," said in'eansproviclinga handle for the device I I 2 shat ifig device'cornprisirig in combination, a ctangular, trans'vfersely arcuate haying "a ngle,felongatedfslotprovided a'djac'nt d parallel to each longer-edge of said guar the iii-tier adjacent ed ges of the" two (slots 'defin'ir ig *fa fiat; cn'ter platform portion 1. on the guard;'=-a dou l gedge blade the "length of'fiihih glide overa greater portion of"th thiEKgriSwth "fiii inftl'ie made-"engagingsurrace'tr-sameiamp being arcuate transversely to press the blade against the outer edges of said platform and cause said blade to be bent to conform with the curvature of the engaging clamp surface whereby each cutting edge of the blade is flexed and held in spaced parallelism withits adjacent guard slot edge no less than a distance of forty thousandths of an inch, theouter surface of said clamp being transversely arcuate, the curvature being of such a degree that extension of the arc will touch both the adjacent edge of the blade and the guard edge when the clamp is in position on the guard; and means for urging the clamp to press the blade into flexed contact with the platform of the guard, said means providing a handle for the device.
3. A shaving device comprising in combination, a rectangular, transversely arcuate guard provided with two elongated slots each parallel to and alongside a longer edge thereof, the portion of the guard between said slots being flat; a rectangular blade, the two longer sides thereof providing cutting edges, the blade being shorter in length than the slots in the guard, the width of the blade being substantially equal to the distance between the two outer edges of the guard slots;
a rectangular clamp less in width and longer than the blade but shorter than the guard slots, said clamp having an inner surface transversely concaved, for engaging and pressing the blade upon the flat portion of the guard to flex it so that each cutting edge thereof is no less than forty thousandths of an inch from the adjacent surface of the guard slot, the outer edge of the clamp being transversely arcuate, the curvature being of such a degree that the edges of the blade and the guard lie on the extended line thereof; and means for drawing the clamp upon the guard to squeeze and flex the blade therebetween, said means providing a handle for the device.
O'LAF RASMUSSEN.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,839,303 Felser Jan. 5, 1932 1,888,962 Swan NOV. 22, 1932 2,312,503 Testi Mar. 2, 1943
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US568424A US2455877A (en) | 1944-12-16 | 1944-12-16 | Safety razor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US568424A US2455877A (en) | 1944-12-16 | 1944-12-16 | Safety razor |
Publications (1)
Publication Number | Publication Date |
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US2455877A true US2455877A (en) | 1948-12-07 |
Family
ID=24271233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US568424A Expired - Lifetime US2455877A (en) | 1944-12-16 | 1944-12-16 | Safety razor |
Country Status (1)
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US (1) | US2455877A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1839303A (en) * | 1931-03-13 | 1932-01-05 | Felser William | Safety razor |
US1888962A (en) * | 1931-09-17 | 1932-11-22 | Patents Inc | Razor |
US2312503A (en) * | 1942-07-27 | 1943-03-02 | Gillette Safety Razor Co | Safety razor |
-
1944
- 1944-12-16 US US568424A patent/US2455877A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1839303A (en) * | 1931-03-13 | 1932-01-05 | Felser William | Safety razor |
US1888962A (en) * | 1931-09-17 | 1932-11-22 | Patents Inc | Razor |
US2312503A (en) * | 1942-07-27 | 1943-03-02 | Gillette Safety Razor Co | Safety razor |
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