US1243797A

US1243797A - Rotary-cutter machine.

Info

Publication number: US1243797A
Application number: US6555915A
Authority: US
Inventors: Lucien J Baribault
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-12-07
Filing date: 1915-12-07
Publication date: 1917-10-23
Anticipated expiration: 1934-10-23

Description

L. 1. BARlBAu'LT. ROTARY CUTTER MACHINE. APPUCATIDN HLED DECJ. 1915.

Paten'd Oct. 23.1911.

2 SHEETS-SHEET 1 WITNESSES ATTORNEY Patented Oct 23,1917

2 SHETS-SHEET 2 INVENTH u ATTQRNEY l-M l Mm 1H. UAH AMD Y RT. Am B, BU ICN IJVIW .RT A Lum 0m RP A MJ. .NJ

lWITNESSES LUCIEN J'. BABIBA'ULT, OF NEW HAVEN, CONNECTICUT.

ROTARY-CUTTER MACHINE.

lApplication led December 7, 1915.

tain new and useful Improvements in Rotary-Cutter Machines, of which the following is a specification.

An object of my invention is to provide a rotary cutter machine for wood working,

the same being of a typeand size to be portable and manually operated after the manner of a grooving plane or matching plane and a part thereof being so arranged that power is applied to the rotary cutter by mechanical means, thus making it necessary only to guide the machine by hand over the stock-to be worked.

AA further object .is to construct the parts to be adjustableto regulate the depth of cut and also ,the position at which the tool operates upon thestock Vwith respect to a gage or guide formed as a part of the inachine.

A still further object is to provideva rotary cutter tool which is mounted on the rotatmg parts to be removable yand to have fitted in place thereof interchangeable tools having varied cutting contours to thus adapt the machine to a variety of uses.

Yet another object is to form a shield as a portion. of-` the structure, which shield is arranged to catch the cuttings or shavings as thrown out by the tool and conveying or directing the same to one side of the path of operation.

With other objects in view which will be referred to, my invention consists in certain novel features of construction and combinations of parts which will be hereinafter set forth in combination with the accompanying drawings and more particularly pointed out in the claim.

Inrthe drawings:

Figure 1 is a view in side elevation of the machine.

Fig. 2 is a view in top plan.

Fig. 3 is a view partly in section on the line 3 3 of Fig. 1.

The block 1 of the plane is in the form of a rectangular plate having an upstanding bracket 2 at one side thereof, and these parts are preferably of cast metal. A handle 3 is mounted on the rear end of the block 1 and at a point forwardly of the handle and in proximity to the bracket 2 Specification of Letters Patent.

Patented Oct. 23, 1917.

Serial No. 65,559.

the block has the elongated slot 4 formed therethrough.

The motive power employed in the present instance is the electric motor 5 which may be attached by the cord G to a standard socket or to any other suitable source of current. The bearing 7 is formed to extend transversely from one edge of the block 1 at a point in advance of the handle 3 and a supporting bracket 8 secured by the screws 9 or in any other desired manner to the case of the motor 5 has a pivot stud 10 extending from one side thereof to be received in the bearing 7 to pivot the motor to the block adjacent the bracket 2,v a nut 11 being screwed onto the end of the stud 10 to hold the parts against displacement. The bracket plate 2 has an arcuated slot 12 formed therethrough and this slot is arched around the bearing 7 as a center and is so positioned that the shaft 13 of the motor is received therethrough and thus the motor may be rocked up and down around the stud 10 and the shaft 13 will have movement in the arcuated slot.

The rotary cutter 111 is mounted on the end of the motor shaft 13 and is held in place thereon by a nut 15 or in any other approved manner, the parts being so positioned that the cutting teeth or blades 16 of the rotary cutter 14 will work through the slotted opening 4 of the block 1 and as the motor is swung around its pivotal mounting the cutter will be projected below -the smoothing face 17 of the block a greater or lesser distance. An upstanding adjusting bracket 18 is formed as a part of the main bracket plate 2 of the block and has a slot 19 preferably arcuated to be throughout its length at a given radius from the pivotal center of mounting of the motor. A screw threaded stud 20 is carried on a support 21 which is secured by the screws 22 on the motor casing in a position that the stud projects through the slot 19 and will work therein as the motor is rocked upon its mounting, a thumb nut 22 being screwed onto the stud 20 to permit clamping of the parts to retain the motor shaft 13 and the cutter 14C carried thereby in a fixed position of projection below the smoothing face 17 of the block.

It is often desirable to make very fine adjustments of the cutting depth, as for instance where the machine is to be used to prepare a groove for line inlay or other fine cabinet work, and to accomplish this line variation of the settings of the parts the adjusting screw 23 is vthreaded through a screw threaded oriliee 2i in the adjusting bracket 18 and has its inner end bear-mg against the stud 20, a hand wheel 2.3 being provided on the outer end of this adjusting screw to permit tur-ning thereof. AS an added precaution to retain the settings of the depth of projection of the cutter 14:, a locking nut 26 is provided on the adj-usting screw 23 to be set dou-'n against the adjusting bracket 18 to prevent turning of the screw.

In the majority of cases where the machine will be used, the cut of the tool will be desired at a given distance from a straight edge, which edge will in most cases be one edge of the stock being operated upon, and I have therefore provided with gage or guide 27 disposed against the smoothing face of the block and arranged to be adjustable.. The adjustment of the gage member is perhaps more particularly illustrated in F ig. 3, and as here shown the adjusting hars 28 are connected with the gage 27 by a substantially U-shaped formation 29 which spaces the adjusting bars from the gage structure and these gage bars are mounted in the transversely extending guide grooves formed across the upper side gf the block 1. The adjusting bars 28 have adjusting slots 31 formed longitudinally thereof and the clamp screws 32 are carried by the block 1 toV be received through these adjusting slots and to have the clamp nuts 33 screwed on the upper ends thereof to permit setting of the adjusting bars to hold the desired adjustment'of gage 27.

A. guard shield 34 constructed of metal and made in the form of a truncated cone has one side thereof cut away as at 35 to permit tting of the shield over the cutter tool 14 with the smaller end against the bracket plate 2 and the cut away portion bearing against the upper face of the block 1. A spring finger 36 is secured to the bracket plate 2 to extend over the shield 34; and has a spring clip 37 carried at the outer end thereof to engage with this shield 34 and hold the same in the proper relation, a handle 38 being provided to permit raising of the clip against the tension exerted by the finger 36 and to thus permit removalof the shield 84. This shield is purposely made of the tapered or truncated cone shape so that as the cuttings or shavings are thrown up by the cutting tool they will be caught Within the shield and Will be carried by a centrifugal movement to be discharged at the outer open end of the shield and thus will pass to one side of the block and out of the operative path of the machine.

In the use of the machine, the cutter is adjusted to have the cutting teeth 16 thereof project below the smoothing face of the block to the proper distance, through the medium of the-adjusting means carried by the adjusting bracket 1S; the clamp nuts 38 are loosened and the gage 27 is moved to the proper point to obtain the desire(l adjusting of the cutting power of the too-l in the movement of the machine over the stock and upon tightening of these thumb nuts the gage is secured in the desired adjusted position to form a guide and to hold the machine in the proper opera-tive path, the power to the motor is then turned and through the mounting of the cutting tool 14 on the shaft 13 of the motor rotary cutting movement is given thereto. By moving 'the machine over the stock, the cutting edges 16 of the tool out away the width and sink the tool to the proper depth that the smoothing face 17 of the block goes to rest against the vface of the stock and then by movement of the block in a forward direction the proper cut is made, the fact that thc/teeth are cutting against the direction of movement tending to hold the machine down against the stock and at the same time assuring that the proper cut is made regardless of the speed of movement of the machine over the stock.

By providing a plurality v-of 4cutters having `various cutting contours, the' machine may be adapted to cut grooves for `fine inlay work, to groove Window sashes for Weather strips, for cutting light moldings, to dress board edges with either a tongue groove'or ship-lap joint and in a number of various other connections Where it is possible to accomplish the desired cut only by the use of power operated machines or through very lallporious effort with a hand plane" or the li e. i l

IVhile I have herein shown and described only one form of the invention it will be understood that variations and modifications might be resorted to in the cutter operating mechanism and in the various other parts o'f the structure Without departing from the spirit and scope of my invention and hence I do not wish'to be limited to the disclosure except in such points as may bel'limited by the claim.

I claim:

In a cutter of the class described, a base plate having an upstanding main bracket at one side thereof and a handle at one end, said plate having a longitudinally extending slot in advance of said handle and in proximity to said bracket, a bearing extendmg transversely from the edge of said plate which carries said bracket between the bracket and the handle, a motor havin-g a pivot stud fixed thereto and mounted toI rotate in said bearing, whereby the motor swings in a vertical plane, said bracket having an arcuate slot arched around said bearing as a center, a shaft projecting from the and an adjusting element threaded through said auxiliary bracket in a plane at right angles to the stud in position to engage said 15 stud and control the cutting depth of the tool.

In testimony7 whereof I affix my signature in presence of two Witnesses.

LUCIEN J. BARIBAULT.

Witnesses:

EDWARD E. GILMOND, JonT T. MUNIGLE.

Ooples of this patent may be obtained for ve cents each, by addressing the Commissioner o! Patents, Washington, D. C.