US3233324A - Blade set-removing devices for hair clippers in particular for hair clippers to be combined with electrical shaving apparatus - Google Patents

Blade set-removing devices for hair clippers in particular for hair clippers to be combined with electrical shaving apparatus Download PDF

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Publication number
US3233324A
US3233324A US237983A US23798362A US3233324A US 3233324 A US3233324 A US 3233324A US 237983 A US237983 A US 237983A US 23798362 A US23798362 A US 23798362A US 3233324 A US3233324 A US 3233324A
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US
United States
Prior art keywords
blade set
spring
slot
housing
recesses
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
Application number
US237983A
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English (en)
Inventor
Heide Jelte Van Der
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Philips Corp
North American Philips Co Inc
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US Philips Corp
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Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3233324A publication Critical patent/US3233324A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/26—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the type performing different methods of operation simultaneously, e.g. reciprocating and oscillating; of the type having two or more heads of differing mode of operation
    • B26B19/265—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the type performing different methods of operation simultaneously, e.g. reciprocating and oscillating; of the type having two or more heads of differing mode of operation of the type having two or more heads of differing mode of operation

Definitions

  • the invention relates to a blade set-removing device for a hair clipper, the blade set of which projects from the housing of the hair clipper with some play through a slot.
  • the invention relates more in particular to an improvement which may be applied to combinations of an electric shaving apparatus with a hair clipper, the motor of the shaving apparatus being used also for the driving of the hair clipper.
  • Such a combination is known, for example, in the form of a hair clipper fixture which is capable of replacing a detachable shaving head of an electric shaving apparatus.
  • the requirement is met that the blade set must be capable of being removed, i.e. for cleaning, for which purpose the housing has to be opened, a cover-shaped part removed and connecting means released by unscrewing or such measures.
  • the object of the invention is to render it possible to remove the blade set with a single simple manipulation while avoiding every unfavourable influence on the longlasting reliable operation of the hair clipper as such. As a result of this, the care of such hair clippers when used by technical laymen becomes possible without diificulties.
  • the blade set-removing device is characterised in that the blade set and a surface of engagement thereof in the housing of the hair clipper are provided with cooperating studs and recesses which enter into each other with a depth of engagement at right angles to the plane in which the blades slide along each other which is determined with respect to the height of lift of the blade set in the slot so that the studs are released from the recesses when the blade set is displaced from the side of the slot to which it is forced by a spring across the distance of play to the opposite slot side.
  • the blade set engages in normal manner under spring pressure a surface of engagement of the housing of the hair clipper, in which, also in known manner a fixed blade of the set may engage the said face and the other blade may be given an oscillatory motion with respect to the fixed blade by the drive.
  • a fixed blade of the set may engage the said face and the other blade may be given an oscillatory motion with respect to the fixed blade by the drive.
  • the springs in co-operation with said studs and recesses ensure an entirely fixed location of the blade set relative to the driving device.
  • one or more springs are provided in the housing of the hair clipper which exert pressure on the blade set in the direction of the slot. After the said removal of the blocking action, the blade set is automatically slid to the exterior by the springs through some distance, as a result of which it can easily be taken out and removed from the slot.
  • this is realized in that in the housing of the hair clipper a spring member is provided which, with a part projecting in the slot and with a part extending at an angle beyond a rear edge of the blade set, exerts pressure on the latter, the said two spring members meeting in a tilting corner which rests on the side remote from the surface of engagement of the blade set on the wall of the housing of the hair clipper.
  • This tilting spring fulfils in a simple and reliable manner the function of forcing the blade set against the surface of engagement across a sufficient width, namely on the one hand by means of the part of the spring projecting in the slot and on the other hand on both sides on backwards points by the ends of the spring which also ensure the forcing of the blade set in the direction of the slot as a result of a component of the spring pressure.
  • the invention also comprises the hair clipper fixture in which the invention has found application and the spring members used as such according to the invention.
  • FIGURE 1 is a perspective view in the bottom member of the housing of a hair clipper fixture according to the invention
  • FIGURE 2 is a perspective view of the same bottom member but being the lower side thereof;
  • FIGURE 3 is a perspective view of a blade set against the lower side which, when providing in the bottom member shown in FIGURES 1 and 2, is facing the inner surface thereof shown in FIGURE 1.
  • FIGURE 4 is a perspective interior view of the cap which is placed on the bottom member of the hair clipper fixture shown in FIGURES 1 and 2 and which constitutes the surface of engagement for the side of the blade set located at the rear edge in FIGURE 3 (the blade set shown in FIGURE 3 in the perspective position may be thought to be provided in the cap shown in FIGURE 4.)
  • FIGURE 5 is a perspective view of the spring member according to a modified embodiment, which form of spring member is also shown in FIGURE 7.
  • FIGURE 6 is a diagrammatic detailed cross-section through a blade set placed in a hair clipper, the crosssection being taken along the line VI-VI of FIGURE 7.
  • FIGURE 7 is a diagrammatic bottom plan view against the blade set shown in FIGURE 6.
  • FIGURES 1 and 2 the bottom member of the housing of the hair clipper is indicated by 1.
  • the pins 3 and 4 are visiblewith which the hair clipper fixture may be fixed in known manner on the motor housing of an electric shaving apparatus having a detachable double shaving head.
  • the two driving shafts of the shaving head are operative in the apertures 5 and 6.
  • a pin 7 Opposite the aperture 6 a pin 7 (FIGURE 4) is provided in the cap 8 which pin longitudinally fits a bottom pin 9 locking the aperture 6 and forming a pivot for a driving arm 10 in the bottom member 1.
  • the arm 10 By means of the eccentric 11 which is driven by the driving shaft of the shaving head introduced in the aperture 5, the arm 10 is given an oscillatory motion, a pivot 12 provided thereon and projecting only through the height of a blade thickness engaging in the slot 13 (see FIGURE 3) of the movable blade 14.
  • the fixed blade 15 resting against it is forced in a resilient manner to be described below against a surface of engagement in the cap 8 and is enclosed between the studs 16 and 17 engaging the recesses 18 and 19 of the fixed blade 15.
  • the said surface of engagement may be determined by ribs 20 and 21, the latter of which also constituting the boundary of the slot between the bottom member 1 and the cap 8, which slot is indicated by 22 in the diagrammatic cross-section shown in FIGURE 6 (the ribs 20 and 21 are not shown separately in FIGURE 6).
  • the cap 8 is further provided with three fixed box screws as indicated by 23 corresponding to screw holes indicated by 24 in FIGURE 1.
  • the blade set 14, 15 is forced against the surface of engagement 20, 21 by the springs 25, 26, 27 which in this case are combined to one spring member according to the preferred embodiment.
  • the studs 16, 17 are located in the recesses 18 and 19 of the fixed blade 15, while in addition pins 28 and 29 on the fixed blade 15 engage in apertures 30 and 31 of the movable blade 14, as a result of which these blades are fixed mutually while maintaining the possibility of a reciprocating movement of the movable blade 14 when being driven by the end of the pivot 12.
  • FIGURE 6 The location of the spring member 25, 26, 27 is further explained with reference to FIGURE 6, from which it also appears that between the blade sets 14, 15 and the bottom member 1 suflicient space 32 remains for the driving by the arm 10' with the pivot 11 (in FIGURE 6 indicated only diagrammatically by broken lines).
  • the height of the studs 16, 17 with respect to the free play in the slot 22 is determined so that the studs are released from the recesses when the blade set is displaced from the side of the slot 22 to which it is forced by the springs 25, 26 and 27 across the distance of play to the opposite side of the slot. So if the blade set 14, 15 is taken at the projecting end and depressed from the position shown in FIGURE 6, it may be removed without difficulties.
  • the counter pressure will be exerted mainly by the spring in the slot of the housing.
  • the oblique rear ends 2'7 and 26 of the spring member exert a pressure, a component of which ensures the pressure against the surface of engagement 21 on two sides of the blade set, so that together with the action of the spring 25 an even pressure of engagement is obtained.
  • a second component presses in the direction of the slot and the removal is facilitated in that the blade set slides to the exterior through some distance under the influence of said spring pressure, so that the studs 16, 17 are released from the recesses 18 and 19 by the depression of the blade set 14, 15 and the projecting end.
  • the spring member the part 25 of which on the one hand and the parts 26 and 27 on the other hand are located in planes which mutually enclosed an angle, tilt around the rib 33 as soon as the blade set 14, 15 is slid to the exterior.
  • the spring part 25 may be forced away from blocking the slot 22, so that the blade set, after cleaning or replacing, can be introduced again without being hindered by the spring.
  • a rib 34 rests on the spring part 25 which rib extends over the width of the slot and is guided in a groove 35 in the slot of the bottom member 1.
  • This rib may consist, for example, of a strip of synthetic material and when the spring part 25 is in the lower position as shown in FIGURE 6 by a broken line, the slot 22 is free. This position only occurs if the blade set 14, 15 is removed. It is shown in addition in FIGURE 6 that if this blade set is placed, the spring part 25 forces the rib 34 against the blade set 14, 15, so that the slot 22 is closed and rendered inaccessible for parts of hair and dust. So this rib also serves as a dust sealing rib.
  • the leaf springs 25, 26, 27, 33 shown in FIG- URE 1 may advantageously be manufactured from a single wire spring of which the part 25a projecting in the slot is U-shaped and the two limbs of the U are bent laterally in the same plane (part 33a) while then they are each bent to the exterior at an angle in a plane which encloses an angle with the first plane (parts 26a and 27a).
  • These parts 26a and 27a bent to the exterior engage the rear side of the blade set 14, 15 as shown in FIGURE 6, but in addition they support in a sliding manner the lateral supporting surfaces 36, 37 in the housing of the hair clipper which surfaces are divergent with respect to each other.
  • the supporting surfaces 36 and 37 are divergent with respect to each other in the direction of the slot. Instead, such lateral supporting surfaces might be provided on the inner side of the spring parts 26 and 27 in which case, however, they would have to converge towards each other in the direction of the slot.
  • An electric hair clipper attachment for use with a rotary dry shaver provided with a drive shaft comprising a housing having a slot at one end, means in said housing connected to said drive shaft for converting said rotary motion to reciprocating motion, a set of relatively reciprocating blades projecting through said slot with clearance and operatively connected to said means, the housing and blade set being provided with corresponding studs and recesses, a spring in said housing normally urging said corersponding studs and recesses into engagement with each other with a depth of engagement substantially perpendicular to the plane of said blade set, said blade set being adapted to be displaced transversely to the longitudinal axis of said housing against the pressure of said spring to disengage said studs and corersponding rescesses and permit the blade set to be removed forwardly through said slot.
  • said spring having at least part thereof located in said depression.
  • An electric hair clipper attachment for use with a rotary dry shaver provided with a drive shaft comprising a housing having a slot at one end, means in said housing connected to said drive shaft for converting said rotary motion to reciprocating motion, a set of relatively reciprocating blades projecting through said slot with clearance and operatively connected to said means, the housing and blade set being provided with corersponding studs and recesses, a spring member having a part projecting in said slot and a part extending angularly thereto and into engagement with the rear edge of said blade set and exerting pressure thereon, said spring parts joining at a portion which rests on a wall of said housing opposite to the surfaces of engagement of said corresponding studs and recesses, said spring in said housing normally urging said corresponding studs and recesses into engagement with each other with a depth of engagement substantially perpendicular to the plane of said blade set, said blade set being adapted to be displaced transversely to the longitudinal axis of said housing against the pressure of said spring to dis
  • An electric hair clipper attachment for use with a rotary dry shaver provided with a drive shaft comprising a housing having a slot at one end, means in said housing connected to said drive shaft for converting said rotary motion to reciprocating motion, a set of relatively reciprocating blades projecting through said slot with clearance and operatively connected to said means, the housing and blade set being provided with corresponding studs 6 and recesses, a spring in said housing normally urging said corresponding studs and recesses into engagement with each other with a depth of engagement substantially perpendicular to the plane of said blade set, said blade set being adapted to be displaced transversely to the longitudinal axis of said housing against the pressure of said spring to disengage said studs and corresponding recesses and permit the blade set to be removed forwardly through said slot, and a guided strip resiliently removable into and out of said slot and located between a part of said spring projecting into said slot and said blade set.
  • a spring for use with an electric hair clipper attach ment as claimed in claim 1 wherein said spring comprises a central rib, a spring part projecting therefrom at right angles in the center and a spring part projecting on each of the ends of the rib in opposite directions, which latter parts of the spring are mainly in one plane enclosing an obtuse angle with the part of the spring projecting to the other side through which vertex the said central rib extends.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US237983A 1961-11-16 1962-11-15 Blade set-removing devices for hair clippers in particular for hair clippers to be combined with electrical shaving apparatus Expired - Lifetime US3233324A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL271493 1961-11-16

Publications (1)

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US3233324A true US3233324A (en) 1966-02-08

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ID=19753416

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US237983A Expired - Lifetime US3233324A (en) 1961-11-16 1962-11-15 Blade set-removing devices for hair clippers in particular for hair clippers to be combined with electrical shaving apparatus

Country Status (7)

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US (1) US3233324A (zh)
AT (1) AT239101B (zh)
BE (1) BE624853A (zh)
CH (1) CH410671A (zh)
DK (1) DK105140C (zh)
GB (1) GB1021695A (zh)
NL (2) NL131405C (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869790A (en) * 1973-07-30 1975-03-11 Sperry Rand Corp Hair trimmer
US3958331A (en) * 1975-02-03 1976-05-25 The Singer Company Garden tool with movable blade and detachable stationary blade
US3962783A (en) * 1974-04-29 1976-06-15 U.S. Philips Corporation Trimming unit
US3997967A (en) * 1974-05-01 1976-12-21 U.S. Philips Corporation Dry shaver with an extendible trimmer
US5068966A (en) * 1990-03-08 1991-12-03 Wahl Clipper Corporation Blade assembly for electric hair clippers
US6044558A (en) * 1998-03-10 2000-04-04 Modas Shing Company Ltd. Combination of hair combing trimmer, shaver, and head side profile cutter
US20060042096A1 (en) * 2004-09-01 2006-03-02 Jeng Shyuan Precision Co., Ltd. Cutter assembly for hair clipper
CN114438695A (zh) * 2022-01-20 2022-05-06 刘则隆 一种纤维被表面毛球清理设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744736B (zh) * 2012-07-26 2014-11-12 珠海新秀丽家居用品有限公司 双刀体毛修剪器

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956042A (en) * 1931-11-27 1934-04-24 Oster Mfg Co John Hair clipper
US2098180A (en) * 1936-12-14 1937-11-02 Moore Electric Corp Hair clipper
GB687252A (en) * 1950-06-28 1953-02-11 Bosch Gmbh Robert Improvements in hair clippers
US2928171A (en) * 1958-12-24 1960-03-15 Oster Mfg Co John Cutting head assembly for electric hair clippers
US2987818A (en) * 1959-03-04 1961-06-13 Juda L Rosenstein Supplemental cutting attachment for electric razors
US3036378A (en) * 1959-02-26 1962-05-29 Philips Corp Accessory, in particular hair-clipping fixtures

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956042A (en) * 1931-11-27 1934-04-24 Oster Mfg Co John Hair clipper
US2098180A (en) * 1936-12-14 1937-11-02 Moore Electric Corp Hair clipper
GB687252A (en) * 1950-06-28 1953-02-11 Bosch Gmbh Robert Improvements in hair clippers
US2928171A (en) * 1958-12-24 1960-03-15 Oster Mfg Co John Cutting head assembly for electric hair clippers
US3036378A (en) * 1959-02-26 1962-05-29 Philips Corp Accessory, in particular hair-clipping fixtures
US2987818A (en) * 1959-03-04 1961-06-13 Juda L Rosenstein Supplemental cutting attachment for electric razors

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869790A (en) * 1973-07-30 1975-03-11 Sperry Rand Corp Hair trimmer
US3962783A (en) * 1974-04-29 1976-06-15 U.S. Philips Corporation Trimming unit
US3997967A (en) * 1974-05-01 1976-12-21 U.S. Philips Corporation Dry shaver with an extendible trimmer
US3958331A (en) * 1975-02-03 1976-05-25 The Singer Company Garden tool with movable blade and detachable stationary blade
US5068966A (en) * 1990-03-08 1991-12-03 Wahl Clipper Corporation Blade assembly for electric hair clippers
US6044558A (en) * 1998-03-10 2000-04-04 Modas Shing Company Ltd. Combination of hair combing trimmer, shaver, and head side profile cutter
US20060042096A1 (en) * 2004-09-01 2006-03-02 Jeng Shyuan Precision Co., Ltd. Cutter assembly for hair clipper
CN114438695A (zh) * 2022-01-20 2022-05-06 刘则隆 一种纤维被表面毛球清理设备
CN114438695B (zh) * 2022-01-20 2024-06-04 南京诺葳尔环保科技有限公司 一种纤维被表面毛球清理设备

Also Published As

Publication number Publication date
AT239101B (de) 1965-03-25
DK105140C (da) 1966-08-22
GB1021695A (en) 1966-03-09
NL131405C (zh)
NL271493A (zh)
CH410671A (de) 1966-03-31
BE624853A (zh)

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