US 1455751 A
Description (OCR text may contain errors)
May 1 5, 1923.
HB HARTMAN SAFETY RAZOR Filed July 6, 1922 2 Shegts-Sheet 1 May 15, 1923. 1,455,751
H. B. HARTMAN SAFETY RAZOR Filed July 6. 1922 2 Sheets-Sheet 2 Patented May 15, 1923.
- parse stares rarer-ircarries,
HARRY BUXTON HARTMAN, OF SCOTTDALE, PENNSYLVANIA.
Application filed July 6,
To, all whom 2'25 may concern:
Be it known that I, HARRY B. HARTMAN, citizen of the United States, residing at Scottdale, in the county of lVestmoreland and State of Pennsylvania, have invented certainnew and useful Improvements 1n Safety Razors, of which the following is a specification.
This invention relates to safety razors, and more particularly to a novel'and im proved joint for connecting the handle with the blade carrier whereby the latter may be readily shifted into any desired position to obtain the proper shaving angle for the blade, according to the requirements of-the individual user.
A primary object of the invention is to provide a simple, practical and reliable joint construction that may be economically man ufactured, and readily assembled thereby reducing the cost of manufacture to a minimum. In that connection it is proposed to provide an arrangement of parts which produces in effect a spring-tensioned universal jointwhereby the adjustment may be read ily ,effected by simply manipulating the blade carrier to the desired angle by finger pressure Without the necessity of operating special parts such as set-screws, thumb-nuts, or the like.
With the above and other objects in view which will more readily appear as the nature of the invention is better understood the same consists in the novel construct-ion combination, and arrangement of parts, hereinafter more fully described, illustrated and claimed. v
A preferred and practical embodiment of the invention is shown in the accompanying drawings, in which:
Figure l is a plan view showing my improved razor construction.
Figure 2 is a longitudinal sectional View taken on the line 2,-2 of Figure 1.
Figure 3 is a transverse sectional View taken on the line 33 of Figure 1.
Figure 4: is an exploded view showing the parts comprising the preferred form of oint constituting the present invention.
Figure 5 is a detail bottornplan view of ablade carrier illustrating a modification of the invention.
.Figure 6 is a longitudinal sectional View taken .on the .line 6-6 of Figure 5. I
Figures 7 and 8 are vertical sectional views taken at right: angles to each other 1922. Serial No. 573,120;
showing a further modified form of the invention.
Similar reference characters designate corresponding parts throughout the several figures of the drawings.
As previously indicated, it is the purpose of the present construction to provide a novel joint which will permit of the blade carrier being readily shifted about a horizontal as well as perpendicular axis with" reference to the handle ofthe razor thereby making it possible to manipulate the carrier in such a way that the cutting edge of the blade may be disposed for use on the face at the desired angle In carrying forward this general object'it is proposed to provide a construction which embodies in its organization a novel socket member A adapted to be held to the blade carrier B by suitable cap-member C which may assume various forms in different embodiments of the invention. 1
Referring first to the preferred form of construction shown in Figures 1 to 4; of the drawings it will be observed that the socket member A is of thimble like formation and preferably consists of a substantially tubular body 1 having the rounded bottom or base 2 provided with a slot 3, while the upper edge of the tubular portion 1 is provided with a circumferential head or flange portion 4. The interior of the rounded or bowl shape portion 2 of the socket member provides a pocket or seat for receiving a ball 5 that may be threaded, riveted, or otherwise fitted p? the reduced'shank portion 6 of the handle its will be observed from Figure 4, the bead 4 of the socket member is adapted to engage with the seat 7 of an inturned shoulder 8 formed on the tubular portion 9 of the carrier B. Therefore, it will be understood that the socketmember 4L and blade carrier B may be interlocked due to the engagement of the bead f with the shoulder 8, and byvreason of such arrangement the'blade carrier may have a circumferential movement on and about the bead. v
For the purpose of holding the ball 5 on the end of the handle in frictional engagement with the seat bottom 2 of the socket member a compression spring S is employed. This spring preferably has a direct bearing engagement with the ball, as shown in Figures 2 and 3, and is held inplace and also compressed by the cap member C, which, in,
the construction shown in Figures 1 to l inclusive, is preferably inlthe form of a cup and has its outer side threaded, as at 11,
' to engage with the threads 12 on the inside ofthe tubular portion 9 of the blade carrier. The closed end or head of the cup is preferaf bly'provided with openings 13 for receiving a spanner tool. or the equivalent for rotating I to lflinclusive,itwill be'apparent that the Ytirety'on the ball 5 due to the fact that a shank of the handle rides in the slot 3.
the thirnblell) into the interiorly threaded portion 9 of the bladecarrier, thereby to the shoulder 8 may rotate on the head t the blade carrier may be shiited. about a relatively perpendicular axis to permit the blade carrier to assume the desired angulamposition,lsuch for example as indicated by the dotted lines in Figure 1.
A-ino dification ofthe invention is illustrated in Figures 5'and 6 of the drawings,
wherein it will beobserved that all of the features of the invention described in Figures 1 to 4 are preserved, the only substantial difference being that the cap 0- assumes the form of a 'flatplate instead of an onterio'rly screw threaded cup. As will be observed from Figure 6, the body of the blade carrier B is provided with a countersunk portion or recess 14 for flushly receiving-the 15 in place and maintain the spring S prop-' plate 15 which constitutes the cap C so that no obstruction will be ofi'ered to the seating of the blade on the blade carrier. The cor- 11ers of the recess 14: are provided with open ings 16 for receiving the tongues 17 carried by the ends ofthe plate 15 and adapted to beclin'ched about the body of the blade carrier at the openings, as clearly shown in Figure 6, thereby to securely hold the plate erly compressed on the ball.
. ing its edge portion 19 spun or flanged over Figures 7 and Set the drawings show a stillfurther modified form of the invention wherein the cap G consists of aplate 18 havthe beadl on the socket member' A, thereby to holdvthe parts assembled andmaintain the spring 8 in position to engage the ball while at the same-time pern'iitting relative-rotational movement between the cap and socket member. The plate 18' may be securedin any suitable and convenient manner to the underside of the blade carrier B, such as by soldering, or for instance,v as
l shownin the drawingsirom which it will be observed that the central portion of the plateisprovided with an upstanding lug 20 which may be riveted into a'countersunk opening 21 formed in the centralportion of theblade carrier.
In all forms of the invention it will be apparent that the distinctive feature thereof is the provision of the socket member A which provides a seat for the ball 5 and also has the bead or flange 4: for engaging with the blade carrier 13 in such a way that the latter may have a circumferential move- .v
ment about the bead l tofpermitof the adjustment of the, blade carrier about a rela-,
tively perpendicular axis. Also'in allforfms" 1 of the invention, itwill be apparent that a spring tensioned universal jo nt is provided wherein the absence of such'screws or other separately adjustable elements makes it pos sible to adjust the position of the blade'car rierwithfilfacility and yet, due to the frictional contact of the ball with the socket,
prevent accidental movement or displace-V I;
nientwhich would be dangerous in lilljlfflanipulation of the razor duringshaving. It maybe pointed out that the springs is ol relatively stout or heavy gauge and it has been found in actual practice that the ball will be held to its seat with suflicient. tightness and persisting pressure thereby to avoid any tendency to looseness. j
Any suitable and convenient means may be employed for clampin the razor blade to the blade carrier B. l -l owever, it is preferred to utilize blade clips 22 which may be pivoted to the rear corners o f theblade carrier as indicated at 23 so as to swingftoward the edges of-the blade carrier'i andt overlie the, edges of the blade as well'as pro tect the corners'ther'eof. Clips of thistype are fully illustrated and claimed'in 'my'co- P ng pp ation Serial No.'558,1'65"fi1 d 01H. 10 a May 8 1922;
Froinlthe toregoingit' isthought that the provemen'twih bereadily apparent to those skilled in the art and it will, of course,rbe v a understood that changes 'in'the fo rm, pro-- portion and minor details ofconstruction'. maybe resorted to without departingfrom the spirit of the invention or scope of th e appended claims. I claim 1. A safety razor including a bladecarrieir and a handleand-a spring 'tensionedun iversal joint connecting the same, said joint coin prising a socket meinber, means for connect ing the socket member to the blade carrier.
/ whereby the latter may havea relativelyrotational movement on v the socket me ber,; and a ball carried by thehandle and seated withinthesocket. p
2; A safety razor including a blade car rier and a handle and a universal joiri'tnfor features" and advantages or'jthe present im- V c onnecting the handle and blade carrier, said I joint comprising a relatively tubular socket memberhaving a ballseat and a bead, means ,for rotatably connecting said" head to "the;
blade carrier, a ball carried by the handle and bearing in said seat of the socket member, and a spring arranged within the socket member and bearing against said ball.
A safety razor including ablade carrier and a handle and a universal joint for connecting the handle and blade carrier, said joint comprising a relatively tubular socket member provided with a rounded end portion constituting a ball seat and having a slot, a bead formed on the socket member,
means for connecting the bead with the blade carrier whereby the latter will have a relatively rotational movement thereon, a ball carried by the handle and bearing in said socket member, the said handle member working in the slot, and a spring for pressing the ball in frictional contact with the seat.
4. A safety razor including a blade carrier and a handle and a universal joint for connecting the handle and blade carrier, said joint comprising a relatively tubular socket member having a slotted ball seat at one end thereof and a bead at the other end a cap member engaging with the blade carrier, a ball carried by the handle and bean ing in said seat of the socket member, and a spring arranged between the ball and said cap member.
5. A safety razor including a blade car rier and a handle and a universal joint for connecting the handle and blade carrier, said confined between the cap member and the v ball.
6. A safety razor including a blade carrier and a handle and a universal joint for connecting the handle and blade carrier, said joint'comprising a relatively tubular socket member having a slotted ball seat and a cir-v cumferential bead, a tubular portion formed on the blade carrier and presenting a shoulder for engaging with the bead on the socket member whereby relatively rotational movement on the bead is permitted and said tubular member being interiorly threaded, a threaded cap for engaging with the interiorly threaded portion of the blade carrier and a spring confined between said cap and the ball.
In testimony whereof I hereunto affix my signature in the presence of tWo witnesses,
HARRY BUXTON HARTMAN.
lVitnesses ABEL FREEMAN, MABEL ROSENSTEELE.