Патент USA US2107055код для вставки
Feb. l, 1938. J. O. JENSEN~ 2,107,055 ` SHAVING DEVICE Filed June 24, 1937 @1M @fw-f 21 _ä “E A11'» , . i IZ I i _ _ , ‘l ,UIN I'Il nl 10 . 4 ¿5* 171614 A56 if, 32 if a j4` 15`n ÉÉ`‘ 20 512% .223g ai# 35 ` ¿§15 15 1Q 32 / À551' ,sq 3f' MÍ!„nl ' ¢|/‘ 15“ Z8 Z4 „i gf l 15 à a@ ' Patented Feb. l, 193 ,107,055 S 2,107,055 ¿or-‘via SVING DEVICE Jens 0. Jensen, Miami Beach, Fla., assigner to Bernard F. Connolly, Mount Vernon, N. Y. Application June 24, 1937, Serial No. 150,015 e c The invention relates to improvements in shaving machines of the type which are operated by power, such as an electric motor mounted in the handle thereof. A device of such general character is disclosed, for example, in the pat ent to Connolly 2,078,563. In the construction of this Connolly patent und in other similar constructions it has been common to provide compressed spring means for urging the inner movable cutter into engage ment with the outer stationary member. Also in many of these constructions the shaving head, including both the movable cutter and the nor mally stationary cutter member, has been made removable as a unit. The provision of these two desirable features, however, has introduced prob~ lems of properly relating the same and of ob taining a device of simple form, economical to make, and convenient to clean and to assemble 29 or disassemble. The~ present invention is con cerned >particularly with these factors. The more general features of the invention as incorporated in shaving devices of the vtype de scribed comprise a head having an outer station 25 ary cutter and an inner movable cutter urged into contact with the outer cutter by a spring (ci. :id-4c) and arrangement of parts, which will be exem pliñed in the construction _hereinafter set forth and the scope of which invention will be indi cated in the claims. ` For a. fuller understanding of the nature and 5 objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawing, in which: ' Fig. 1 is a general. view in elevation of a razor 10 adapted to be driven by -electric motor and. hav ing the features of this invention incorporated therein; , Fig. 2 is a vertical sectional view through the elements of the operating head; 15 Fig. 3 is a view somewhat similar to Fig. 2, but with the parts shown in the position when the head is completely removed from the han die; and Fig. 4 is a transverse sectional view taken on 20 the line Ii-¿i of Fig. 3. A razor of the general type in which this in vention is adapted to be incorporated is shown in Fig. 1, and comprises a handle i@ adapted to contain an electric motor or other suitable power 25 source arranged to reciprocate the movable cut ter element by a suitable drive connection, such in the head and the Whole being removable as a as by oscillation of the lever li about the pivot unit from the supporting handle and drive I2 fixed in the handle. The cutter head assem 30 means. When thus removed, however, the spring bly is indicated generally at i3. The cutter head 30 pressure means becomes ineffective, permitting may vary in its general shape and the nature of the inner cutter member to slip out freely from ' the cutting members, but 'as here shown it is the head and rendering immediately the parts generally similar in construction to that shown accessible for such purposes asv examination, in the above noted Patent No. 2,078,563 and 35 cleaning and lubricating. Correspondingly, in comprises an outer stationary cutter member I4 reassembling, the inner cutter may be slid easily and an inner movable cutter member l5 adapted in the present form to receive a reciprocatory and conveniently into place. and plunger means, this means being contained T_he construction' as a whole is very simple and economical of manufacture, such detail ma 40 chining, fitting and assembling as is necessary -being performed for the most part in the readily accessible elements of the removable head, as distinguished, for example, from the more diiii cult and expensive task of introducing these into 45 the handle, and at the same time ensuring that the' spring pressure means will function prop erly. The parts are so made and arranged as to be movable in a uniform manner, free from bind 50 ing or undue friction, and practically impossible of getting out of order. , Other objects of the invention will in part be obvious and will in part appear hereinafter. The invention accordingly comprises the fea 55 tures of construction, combination of elements, motion. The movable cutter l5 is a substantially ' solid member having recesses i5a in each side surface thereof for the ready egress of cut hairs. 40 The shape of the blade members may vary, the particular type selected here forillustration be ing similar to those shown in the said prior pat ent, and comprise, in the outer stationary cut ter member, finely spaced teeth i6 having at the 45 central part thereof a raised comb portion I1. Transverse slits are cut in the inner movable cutter l5 to form teeth corresponding to those of the outer cutter. In addition the inner cutter 50 has a groove it extending along the middle of the top surface to form a depression comple mental to the raised portion I1 of the outer cut ter member. It will be understood that, in the interest of clarlty,`some of the nner dimensions, u 2 2, 107,055 such as the size of the teeth, are exaggerated as to size in the illustration. 'I'he fixed cutter member includes >a body por tion I9 which may be made integral with the re maining parts, including the teeth of the sta tionary cutter, but for the purpose particularly of convenience of manufacture, this body por tion as shown` is made separately. The remain ing outer portion of the stationary cutter com 10 prises a thin plate 20 which may be secured to the body portion I9 by suitable means, such as by brazing. The stationary cutter member in cludes also a plate 2l adapted to bev secured to the body portion I9 by anysuitable means, such 15 as the screws 22. ` The inner movable cutter includes a base por pletely released and the inner cutter 24 is entirely ' free and is capable normally of sliding out of 'the head of its own weight when the head is turned to asuitable position. When, however, the head is assembled on a handle the plung ers 33 will be elevated placing a compression on the springs 32 and causing the balls 3| to bear against the bottom of the base 24 of the mov able cutter. A uniform pressure is thereby main tained on the movable cutter member during 10 operation practically free from friction. Any suitable means may be provided for securing the head in the handle, as, for example, the thumb screw'3`I threaded in the handle and adapted to project into a depression 38 in the side of the 15~ stationary cutter member. ~ tion 24 provided with a notch 25 adapted to re ceive the ball portion 26 of the oscillatory lever II for reciprocation of the movable cutter. The 20 base portion I9 and plate 2I of the fixed cutter have a central opening 21 providing a clearance for this purpose. As shown in Fig. 4 the base portion 24 of the movable cutteris of increased width over the portion carrying the cutter teeth, 25 and the same is true as to the outer stationary cutter member. In order to ensure close shear ing engagement between the blades of the outer and inner cutter with such a shape, a slight All of the machining operations and assem bling of the spring pressure means for main taining the cutter members in shearing engage ment are confined to the parts of the removable 20 head; Accordingly. and as will be apparent from clearance will be provided at the points 28. In accordance with the lprinciples of this in vention, there _is provided a spring pressure above construction and different embodiments of the invention could be made without depart 30 ing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be~ interpreted as illustrative and not in a limiting 30 means for maintaining such close engagement between the fixed and movable cutter blades, which means is incorporated completely in the 35 cutter- head and are removable therewith as a unit, this spring pressure` means being effective, the construction shown, these operations may be conveniently and economically made. Al though the pressure means is a unitary part of ` the head, it is released and becomes ineffective automatically upon removal of the head from the handle. - Since certain changes may be made in the sense. 35 1 Having `described my invention, what I claim however, only when the unitary head has been astnew and desire to secure by Letters Pat attached to the handle. lThe details of this fea ture as specifically embodied in the present en , is: » 1. A unitary head for a power driven shaving 40 razor construction comprise vertical holes 30 in - device adapted to be mounted on a suitable sup the body portion I9 of the stationary cutter porting handle, comprising an outer cutter, an adapted to receive therein the balls 3|, which inner cutter movable » relative thereto, spring balls are urged into contact with the base 24 of the movable cutter by suitable spring means 45 which may be of various types, such as a flat or pressed means adapted to urge said inner cutter into shearing engagement with said outer cutter, and a plunger engageable with said spring means curved leaf spring, but as here shown compris ing a coil compression spring 32 'for each of the balls 3|. At their lower ends these compression springs engage plungers 33 slidably mounted in apertures in the plate 2l. This plate 2I is coun terbored from the side adjacent the body por tion I9 to a. size corresponding to the spring and adapted when the head is assembled on the handle to compress said spring means, but free ing said spring means of compression when the head is removed from the handle. 2. In a shaving device a supporting handle, and a shaving head adapted to be removably mounted on said handle, said head comprising openings in the body portion, and the plungers an outer stationary cutter member, an inner > 33 have a flanged head 34 adapted 'to fit into "movable cutter member and impositive means the counterbore. It will be apparent that when for urging said inner cutter- member outwardly 55 the plungers are inserted from the upper surface against said outer cutter member comprising a of the plate 2l and the plate 2l 'then secured to bearing member supported by the outer cutter ' the body portion I9, the plungers are prevented member and adapted to engage against a portion of said inner cutter member, spring means for 'from falling out of the assembled head; but pro vide the projecting portions 33 adaptedto en urging said bearing member- against said por- « .gage the bottom surface 36 of `the supporting handle when the head is assembled therein. The balls 3I are likewise prevented from escaping from the holes 30 when the cutter member 24 tion, and a plunger adapted to engage and com press said spring means, said bearing member, is removed from the head, such means com prising a beveled flange portion 36 projecting into the opening 30. 'I’his flange portion 38 may be conveniently and economically produced in the operation of drilling the hole 30 by drill 70 ing the opening from the lower surface of the member I9 and stopping short before the hole is completely drilled through. As will be observed from Fig. 3, for example, - when the cutter head I3 is removed from the handle the tension on the springs 32 is com-> spring means and, plunger all being mounted in said head and removable from said handle as a unit, and said plunger being adapted when as sembled on the handle to engage a portion there of and compress said spring, but releasable when the head is removed from the handle thereby to relieve the spring and bearing member of pressure. 3. A shaving device4 having a supporting handle, a shaving head, and means for removably mount ing said head on said handle, said head compris ing an outer cutter member, an inner cutter mem ber movably mounted relative thereto, and spring 2,107,055 3 pressed means for urging said inner member into members together into close shearing engagement, shearing engagement with said outer member, said means including a part engageable with a said means being mounted wholly in said remov able head and having a portion engageable with a part of the handle when the head is mounted on the handle to compress said spring means and render it effective to urge said inner member into engagement with said outer member, but releas able to relieve the pressure when the head is re moved from the handle. 4. A head for a power -driven shaving device adapted to be mounted on a suitable supporting handle, comprising an outer cutter, an inner cutter movable relative thereto, a pair of .spaced spring pressed means adapted to urge said inner portion of said handle to effect compression of cutter into shearing engagement with said outer cutter, and a plunger for each of said spring means engageable with the respective spring means and adapted when the head is assembled the spring means when the head is assembled on the handle. 7. A power shaving device combining a support ing handle, a shaving head and means for remov-- ably securing said head on said handle, said head having a ñrst normally ñxed cutter member, a second cutter movably mounted relative thereto, 10 and means for urging said members into close cutting engagement, comprising a bearing mem ber mounted in said ñrst cutter member and adapted to bear against said second cutter memï ber, a spring mounted in said first member en 15 gageable with said bearing member, and a. plunger mounted in said ñrst cutter member engageable with said spring and having a part engageable with a portion of the handle when the head is v20 on the handle to compress said spring means, but secured thereon to compress thereby said spring. 20 8. A shaving head for power shavers adapted freeing said spring means of compression when „ the head is removed from the handle. . 5. A power shaving device combining a sup porting handle, and a shaving head removably 25 mounted thereon and having a stationary cutting member, a second cutting member movably mounted relative thereto and“ having spring pressed means mounted in said head for urging said members together in shearing relation, said 30 means including a part engageable with a portion of said handle to effect compression of the spring means when the head is assembled on the handle. 6. A shaving device combining a supporting handle, and a shaving head removably mounted 35 thereon comprising a stationary cutting member, a second cutting member movably mounted rela tive thereto and a pair of spaced spring pressed means mounted in said head for urging said to be mounted on a supporting handle, said head comprising an outer cutter member, an inner cutter member movable relative thereto, spring pressed means mounted in said outer cutter mem ber for urging said inner cutter memberinto shear ing engagement with said outer cutter member, a plate secured to said outer cutter member, a plunger adapted to engage said spring and ex tending outwardly through an opening in said 30 plate, the outer end of said plunger being engage able with a portion of~ the handle when the head is mounted thereon to compress said spring means and thereby to press said inner cutter member against the outer, but releasable by re 35 moval of the head to free the cutter members of such pressure. JENS O. JENSEN.