US1563861A

US1563861A - Hair clipper

Info

Publication number: US1563861A
Application number: US680304A
Authority: US
Inventors: Stanley J Jembrzycki
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-12-13
Filing date: 1923-12-13
Publication date: 1925-12-01
Anticipated expiration: 1942-12-01

Description

Dec. 1, 1925.

1,563,861 s. J. J EMBRZYCKI HAIR CLIYPER Fild Dec. 13. 1923 2 Sheets-Sheet 1 lll Patented Dec. 1, 1925.

'PATENT orifice.

STANLEYJ. JEMBRZYGKI, GFCHICAG-O, ILLINOIS.

HAIR CLI'PPER.

Application filed December 13, 1923. Serial No. 689,304.

To all 'whom t may concern:

Be it known that I, STANLEY J. JEM- nnzrcirr, a citizen of the United States, and a resident of Chicago, in the county of Cool; and State of Illinois, have invented certain new and useful Improvements in Hair Clippers, of which the following is a specification.

This invention relates vto improvements in hair clippers and more especially to an 4improved construction for a motor driven clipping or shearing" implement.

`The principal object of the invention is to provide a more efficient and dependable clipper for hair cutting purposes, embodying an improv-ed type of driving mechanism, calculated to transmit a reciprocatory movement to the movable cutting blade, without excessive vibration, chattering and noise.

A. further object is to improve the general design ofthe implement with a view to obtain better balance, and Vdistribution of `weight, and greater ease of manipulation in the hand of the operator and finally, to attain greater simplicity in construction and adjustment.

A` preferred embodiment of the invention is disclosed in the accompanying drawings, in which, n

Figure l is a perspective view of the complete clipper,

Figure 2 isa sectional view taken on the longitudinal axis of theclipper,

Figure 3 is an` enlarged cross sectional view taken on lineB-S, of Figure 2.

Figure 4 is a top plan view with cover and 4tension `plate removed, and portions broken `away to show the complete drive.

Figurev 5 is an enlarged detail view in sec' tion taken on line 5 5 of Figure 2.

Figure 6 is a yperspective view of the cover plate, and

Figure 7 is a perspective view of the tension plate.

Figure lclearly shows the general design and arrangement of the parts of the complete clipper, which comprises a body or handle 1, shaped to fit comfortably and naturally in the hand of the operator, fixed and

movable cutting blades

2 and 3, set oblique to the handle at the forward end thereof, a flexible shaft cable l, leading into `the'rear end of the handle, and a slot 5, near the rear end for suspending the clipper upcn the stand or other support when not 1n use.

lall respects to those used in the ordinary handy clipper, the fixed blade 2 being securedk to the body and againstan oblique face lar at the forward end thereofby means of screws or other fastening means. kThe eutlting edges ofthe fixed bladeextend" beyond the body and have the usual toothed or conibelilre construction. The'movable blade 3, bears upon the `fixed blade and travels lengthwise thereof at a high speed of reciprocatory movement whereby the two sets of cutting teeth accomplish the cutting in the usual manner.

rlhe body l, forming the handle of the clipper, is of a somewhat irregular shape,I wider at the central portion and taperingaway toward the ends, sov as tolit comfortably in the handV of the operator. As clearly shown in Figure 3, thebody is generally rectangular in cross `section with its top, bottoni and sidefaces slightly convex. At the forward end of the handle a V-shaped space is formed between the upper portion of fixed blade 2 and the adjacent edge of the body,just above the under portion to which said fixed blade is attached. It is within this V-shaped space that-the movable blade is mounted, together with the posts connecting the blade with the driving mechanism.

Referring now to the moving parts which impart the reeiprocatoryl movement to the cutting blade 3, the same are located within a relatively shallow triangular shaped cavity 7, extending longitudinally and arranged symmetrically of the body near its forward end. 'Within a well 8, sunk below the larger end of the cavity is mounted a worm wheel 9, journalled upona stud lO. In the plane of this well and extending tangentially thereto is a passage l1 opening through the rear end of the body. `At the forward end of this passage is journalled a worm shaft 12, meshing with the worm wheel 9 and connected with an end fitting of the iiexible shaft of the. usual construction, enclosed within the wall Il. The end fitting of the llO shaft is yieldably held in driving Connection, by means of a spring pressed ball lock 14, engaging an annular groove V13 in the fitting.

Journalled on the top face of the worm wheel 9 is an eccentrically disposed crank pin or block 1li, projecting upwardly-into the cavity 7. This block is slotted diametrically to slidably engage one end of an oscillatory lever 15, in the form of a bar extending longitudinally of the cavity, and journalled near'its opposite end, upon a post 16, anchored in the body at the forward end of the cavity and just inwardly A from the forward edge of the body 1.y The post 16, has an kenlarged journal bearing 16?L engaged by'ja bearing sleeve 15L of the lever 15.y Beyond the journal bearing extends the short arm of the lever 15, having 'I the form of a. yoke 17 projecting beyond the edge of the body, and engaging a pin Y1&5, preferably formed integral with the movable blade 3,' the axis ofsaid pin being parallel with that of the post 16, and oblique to the plane of the blade. To accommodate the yoke, the metal surrounding the pin is cut away in the form of a semicircular cavity 18a concentric with the axis It is manifest that the flexible shaft drives the worm wheel at a reduced speed j of the pin.

through the intermediate worm drive, and.

the rotary vmovement of the worm wheel s translated into an oscillatory movement of the lever bar through the medium of the sliding bar and crank connection. The yoke 17 being considerably shorter than the crank end of the lever, the oscillations are transmitted to the movable blade as a rapid reciprocatory motion of short stroke.

The cover plate 6 has already been described generally as ittingover the cavity 7, and as a preferred feature of construction, the plate is counter-sunk into the body, so that Vthe surfaces of the plate and body are flush. The cover plate 6, Figure 6, is provided with an aperture 6EL which engages the post 16, and further, has a forward end portion 19 which projects beyond the edge of the body, its forward edge resting substantially in contact with the oblique face of the near blade 3. Moreover, there are 'formed on either side of the proy jecting` portion 19, integral ears 20-20, bent at right angles to the plate, said ears converging to a point to fit snugly in the V- shaped space at the intersection of the cutting blade and the forward edge of the body 1. These ears 20-20 embrace the pin and yoke connection and together with the projecting portion19, form a complete closure about the moving lposts suiciently tight to prevent the hair from working into the space and interfering with the opveration 'of the implement.

Mounted on top of the body and adjacent the cutting end is a tension plate 21, shaped to extend the full width of the body adjacent the cutting blades and converging rearwardly therefrom and terminating near the central portion of the cover plate, in a rounded end portion 21a. rlhe plate is spaced above the body by the provision of a marginal flange 22, which bears on the s urface of the body. The rounded end of the tension plate isconcentric with and surrounds a circular boss 23, on the surface of the cover plate 6, which serves to position and limit the movement of the tension plate. The tension plate extendsbeyond the body with its forward edge inclose proximity to the movable blade throughout its entire length, there being contact established between the blade and the plate by the provision of two bearing lugs 24-24, spaced inwardly from the ends and the forward edge of the plate. 'At either side of the tension plate and adjacent the forward end are transverse guard flanges 25-25, the same being continuations of the marginal flange 22, engaging the body l. These guard flanges have oblique forward ed esparallel with the plane of the..blades whlch give them the same pointed or convergent shape as the ears 20, of the cover plate. As shown in Figure 1, these guard flanges overlap and embracethe forward side edges of the body and close the ends of the V-shaped channel between the blades and the body, thus affording greater protection against the accumulation of hair and dirt. The tension plate has a central aperture 26, through which the post 16 extends the latter projecting a short distance above and terminating in a threaded end, on which is mounted a knurled thumb nut 27 with a spring washer 28, between the nut and the tension plate 21. By tightening or loosening the nut 28, the pressure exerted by the lugs 24 at the edge of the plate 21 against the cutting blade 3 is adjusted to vary the bearing contact between the blades and hence their cutting action. i

Having described the device embodying the invention, I claim Vas new and novel:

In a hair clipper, the combination of a body, fixed and movable blades mounted at one end of said body and arranged at an angle oblique to the longitudinal axis of said body and forming a V-shaped space between the movable blade and the adjacent end surfaceof said body, a post anchored in said body adjacent said blades, driving mechanism mounted in a cavity formed in -said body-and comprising an oscillatory lever journalled on said post land having pivotal connection with said movable blade, through the medium of a pin and yoke connection, and a worm and worm wheel in driving connection with said lever, ra cover plate toi' said recess having a portion eX- lugs engaging said movable blade, and a tending to said movable blade, and pronut on said post and adjustable to vary l0 vided with laterally spaced ears eXtendthe pressure exerted by said tension plate ing,` into the V-sliaped space on either side on said blade.

of the point of pivotal connection of said ln Witness whereof, I hereunto subscribe lever with said blade, and a tension plate my naine this l0 day ot December, A. D., mounted on said post and having a marginal 1923.

flange bearing upon said body and bearing STANLEY J. JEMBRZYCKI. i