US1714778A - Shearing or clipping machine - Google Patents

Description

Patented May Z8, 192.9.

I vtierras sera eater orties.

snnAnINe on CLIPPING MACHINE.

Application 'iled August 20,1928, Serial No.

rlhis invention relates to a shearing machine or hedge clipper having a multiplicity of shearing edges as distinguished from the two shearing edges ot' ordinary scissors or shears.

ln shearing machines having a pair of toothed cutters providing a multiplicity ot shearing edges, generally one oir' them 'is held still by one hand, while the-other is given a reciprocating sliding movement bythe other hand, as a rule the right hand Nevertheless, it is more natural with most people .to move both hands towards each other.V

TVith the known clippers or shearing machines, having a common pin on which the two operating legs or handles are pivoted, mounted on a centre line of a guiding board or plate, a shock results every time the hands are brought together as well as when they are separated, causing lateral oscillations of vthe guiding lplate on which is generally mounted one of the toothed cutters. Uneven trimming accordingly results, unless theoperator of the clipper maintains the stationary leg or handle absolutely still and firm.

The present invention has for its primary obj ect to provide a clipper by which such lateral oscillations as aforesaid are avoided, but instead the guiding plate is given a slight reciprocation along a line which lies at right angles tothe sliding path ot the toothed cutters This is achieved by providing a shitting support for the common pivot tor the legs on the guiding plate, instead of a stationary support which the pivot pin has in known constructions of clipper.

In order that-the invention may be clearlyV understood and readily carried into practice, l have appended .hereto one sheet ot drawings, illustrating the same, wherein f Figure 1 is a plan view of the cutting portion of a clipper .according to the invention, f

Figure 2 is a t 'ansverse vertical cross section, with certain parts removechand Figure 3 is a longitudinal vertical cross section, again with certain parts removed.

rfhe toothed cutter 1, which in the construction shown is fastened to the Aguiding board 2. is provided with two screw bolts 3, on which are nuts t which keep lthe springs 5 pressed down upon the other toothed cutter 6. The two bolts 3 project through the elongated slots 7, and protector bridges 8 straddling over the springs 5, are provided to avoid access of sand beneath the springs.

On the toothed cutter 1 is mounted a pin 9,

17 moves.

300,639, and in Denmark September?, 1927.

which projects up through the groove in the or handle 11 ot' the clipper' rotates on the pin 12 mounted on the toothed cutter 6, while the pivot 13 common to both legs 10 and 11 holds together the disc 14, the two legs, the covering disc 15, the casing 16, andthe sliding disc 17 by means ot the nut 18, which tits into a counter-plate 26 fastened to the sliding disc 17 by a small screw (not shown).

The pivot 13 tor the handles or legs 10 and 11, moves within the chamber 27 along a curved path, and above this chamber 27 is another chamber 19 between the casing 16 and the bottom plate 2()` in which the sliding disc Four vbolts 21 hold the arched cas- 16 and the bottom plate 2O assembled on guiding board 2.

e A butler 22 on one of' the legs or handles in th has. a leather facing 23, and another butler on the other leger handle carries a bolt and nut 24Ck which serve to limit the stroke of the handles to an adjustable extent. y

lt will be yseen that the pin 9 must be considered as the stationary or permanent point in relation to whichV the pin 12 and-the pivot 18 move, either wheny the handles 25 on theV legs 10 and 11 are moved towards, or sep arated from each other.

The cutter V1 and the guiding board 2 may be made in one single piece, in which case the pivot 13 would be slidingly held upon the guiding board 2 partially by the covering disc 15, and partially by the sliding disc'17,'one

on each side of the guiding board 2, which in 'i such construction must be provided with a curved slot in which the pivot 13 may slide.

- The guiding board 2, of course, serves also i as a direct support for the pivot 13.' .v

lfVhat I claim is i j 1. A clipper comprising a pair of relatively Y,

slidable toothed cutters, resilient means pressing said cutters together, handles pivotally connected to respective cutters, a pivot for 1 said handles, a plate iiXed in rela-tion'to onevv of said cutters, a sliding disc on one side of Y saidV plate, and a coveringV disc on the other f side of said plate, said sliding and covering discs slidingly connecting said pivot with said plate.

2. Aclipper comprising a pair of relatively slidable toothed cutter s,resilient means press-k ing said cutters together,handlespivotally connected to respective cutters, a pivot or said handles, a plate fixed in relation to one ofsaid cutters, a sliding dise on one side of said plate, and a covering disc on the other side of said plate, said sliding and covering discs slidingly connecting said pivot With said plate, and the pivot of the handles moving in a curved path.

3. A clipper comprising a pair of relatively slidalole toothed cutters, resilient means press- Vingl said cutters together, handles pivotally connected to respective cutters, a pivot for said handles, a plate fixed 1n relation to one of said cutters, a sliding dise on onev side of v said plate, and a covering disc on the other side of said plate, said sliding and covering discs slidingly Connecting said pivot With said plate, a chamber in which the handle pivot moves, the said Vpivot for the handles moving in a curved path.

In testimony whereof I have signed my name to this speeioation.

JOHANNES HANSEN.

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