US1590183A - Guard for sawing machines and planers - Google Patents

Description

June 29 19260 L... L, FCFWNE ,GUARD FOR sAwiNG MACHINES'AND PLA'NERS 1325 3 Sheets-Sheet 1 Filed Jan. 20

INVENTOR. 36, @MM/ 43 6 M AT RNEY June 29 1926., I 1,590,183

. L. L. CRANE GUARD FOR SAWING MACHINES AND PLANERS Filed Jan. 20, 1925 5 Sheets-Sheet 2 INVENTOR.

A RNEY Patented June 29, 1926.

UNITED STATES LEON L. CRANE, OF BATTLE CREEK, MICHIGAN.

GUARD FOR SAWING MACHINES AND PLANERS.

Application filed January 20, 1925. Serial No. 3,603.

The present invention contemplates a portable housing adapted to completely cover a saw or gang of saws and so constructed that a loosened knot, splinter, or fragment of material, cannot be ejected from the housing either from contact with the sawor from the binding of the saw with the material, and cause trouble-of any nature, such as, for instance, the breaking of windows, lighting fixtures, etc., in line with the saw, or injure the operator.

The invention further contemplates a hinged hood operative with and forming a part of the guard, and so constructed that it maybe released and permit a saw or gang of saws to be removed or placed upon the arbor without inconvenience.

It further contemplates a means for safeguarding the throat or entrance immedi ately forward of the rotating blades of a planer, so that fragments or pieces of material entering through my improved guard cannot react and create trouble for the operator, as is of common occurrence where adequateprovision is not made for the safeguarding of the person attending the ma chine.

My invention further contemplates a means thoroughly efiicient for the safeguarding of the machine to which the guard is attached, for insuring absolute safety for the operator whether he be in front, at the rear, or at the side of the machine, and whereby if a saw breaks, or material in passing through the guard; becomes splintered or broken, the parts will not escape the guard to the injury of the attendant or the shop fixtures.

Laws are becoming more and more exacting in their provisions for safeguarding the public, not alone as to sanitary and other conditions, "butalso in the application of various devices to apparatus for insuring the utmost physical safety to operators in the shops of our country, and to this end the present invention is especially constructed.

the outer bearing of thesaw arbor removed,

and shows my invention with its hood. section swung back in position for placing or removing the saws.

Fig. 4 is a perspective view inmodification of the guard as provided for planers.

Fig. 5 is a broken, detail side View of the guard and shows the pivotal guard fingers at the entrance to the housing.

Fig. 6 is a side view of an ordinary sawing machine with my guard in modification covering the saw, and Fig. 7 is a'plan view of Fig. 6 showing a side adjusting means by which lumber may be sawed into "various widths.

Like marks of reference refer to corresponding or equivalent parts in the views, in which the table A, its frame B, arborC, saws D, feed rollers 1, their sprocket wheels, the drive chains 3, motor 4 and its driving belts 5 and 6, constitute the gang sawing machine to which my guard E is attached; As shown in Figs. 1 and 2, the saw is of a gang type, wherein the saws D operate through a cut-out or opening 7 in the table, and rotate on an arbor G mounted at its outer end in a detachable bracket 8 fitted to a suitable bearing 9 on the frame B.

The guard for saw purposes comprises a jointed housing 10 and 11 and a series of hinged finger guards 12 suspended over the front entrance to the housing. The housing is designed to completely cover the saws D in such manner that in the event of a tooth breaking from a saw, or the saw itself breaking, a knot, splinter or part of timber be coming loose and being hurled from the saw in any direction will not escape the housing. to create trouble or injure the attendant. As shown, the housing is jointed immediately forward of the saws and is provided with a pintle 13 passing through appropriate lugs Hand 15 of the parts. At places where the upper feed-roller shafts are positioned, the left hand side of the housing (as herein shown). is provided with slot-s ac which permit the housin to set over said shafts and seat onthe saw tidble The forward portion 10 of the housing is made fast to the sawtable by Jmeans of cap 1 ehine'into:appropriate i'chu't'e sexes, etc;

screws 16 passing through offset lugs 17 into the saw table, and the rear portion 11 and that part, covering the saw ;or saws 18' detachably secured at its rear end by means oblong rectangular," trunk having a part of its forward end sides 20 projectingsomewhatbeyiond ts topto ferm transversely-- d-i-sposedshoul'der -or-stfo'p 21, against which;

the finger guards 12 oi:normal-position:

abut when in'afvertical The fingers. 12'iaiejthin flat piecesofmetal beifeled to a point from, the. rear. of their lower ends: and are: perforated through the r flattened portions near their. upper ends and: suspended SlCliby side on a-pintle or hinge, 22 The pintle is supported at its ends by the; offset extensions 20' of the housing sides.v Preferably the pintle 22' is placed so' that its upper surface'will bein alignment with the upper surface of the housing, and;spaced'fromthe shoulder. 21

in such manner that a finger 12 Will abut said shoulder wliens *in-a normal. position, yet per nut. said. finger to ztilt or swrn'g inward-1y and 'sateguaifdthe space in which the lingerv is; operated. As shown, the'fingersare positioned 901 :to; a plane oflthe sawztableand,

a'lsoto the top wall'of the-housing, and they prevent any material thrustbeneath them from being; BjBCtQLljIOIiTJtlIG housin ,The'

position of; the fingers and; the inclination of, their lowerv ends readily permitsv a board. to enter the housing; and tljbftl'l'fi' same time they form stops which prevent any back thrustiof the board flOHltl1G$2tW.v,Tl18 lYI clination: of the' fingers at their rear; bottom extremities and'thelr pivotalsupport be;

tween the housing sides, readily permits: an board or'. other piece o'ftimber: of varying; widths and thickness to: pass. belo-wtheirf pointsan'd at thei same timetheyske'ep the mouth ofxth'e hou'singielos'e'd: As some oi; the fingers raise other'sTwilllower, with;

the; varying; dimensions 1 of the material passing'intoi therhousingal Experimice" lrasiproven thatit'vitlr my im-' proved sawguard, fragments of the wood coming into contact with thejsawsare brok en up withinwsthehousing: and ejeoted through the thi'fo at opening; throughwwhich I the! saws; rotate (QXEGPU such; 'pieees' as; are 1 thrown. against" the-1' fingers and i do not :re-.

bound? into .saidropen-ing andarejdeliveredr together with the sawdustbeneath the:

In Figs. 6 and 7, the guard E is provided with a longitudinally-slotted arm; 2-3 parallel with the saw arbor and through which av stud 24 extends from the saw table and carries ahand nut 25, by means of which the guard may be shifted sidewise for sawing lumber in a arious widtlis.

In Fig. 4 the housing shown is construct ed tori attach-mentto planer beds. \Vhen attached to laners the rear opening of the housing is placedin close proximity to or against the; overhung throat opening; vor

I guard forwardot thekpl'aner,hea'dyand is secured towthe' planer. bed' with cap screws or other appropriate fastentngs;

From the, foregoing description and: ex-

planation of; the'Qconstructionc and operation of. my improved sawt- 3-1).(11 planer guard,'iits objects, advantages and geneizal'utility; will,- 1t 1 IS believed, beireadilyi apparenttoi those familiar with 'the-tworki to: which ther iiiven tion appertainsltlajvi-ng set forth invention, what I"- claim, as new anddesireztfoz sedute =.by Lettersl Patent; is

i 1; The ,com'bi-nation withi a 1 saw. table: and

a saw-.- operative through i said: table,- of a guard; comprising; aisetional housing. de

tachably fitted to said ?table and adapted to direct lumber in a'pathto'ssaid saw, one:

section Off said housing being; attached to said saw table. immediately: for-ward ot said saw; the other secti'on ada'pted X to: abut said first section and Z to' icovferisai d saw, said sec tions being hingediatithei'rt abutting ends in such manner that'thezsection covering'said'.

saw). will? swing-11p sandi lieuom saidyfirst section, sard first sectiomhaving a nioutlr open:

ing'f, a pivotal support suspended'sacross said.

housing} pi'votali guards suspended side? by side onjsaid support and adapted'to engage said table, a stop:v -formed i by the end top. of:

sa'id'housing adapted xtofl' engage thelupper inner endsiof'saidfinger guards: and": pre' vent said fingers from swinging backward on their pirvetalsupport; and'to' permit said fingersito swing-inwardly when a boardxor other material is: thrust into saidmouth opening-,1 substantially 'asgj-and for thef'lpu'i pose set-forth.

2: The combination-with: a-"sa'w" table and" a: saw operative through; said": table; of a saw. guard comprising a-eliousingrdet achably fittedto 'saidftable; said housing comprising; two section abutting end to end inialignment and adapted to direct lumbeflll it path to:

said saw, the forward :of said-sections beifig located "in advance: of saidvsaxvi: and having? moiitheopeninga with depending finger guards adapted to 2 permit hunb'en to Q entersaid housing and retain I splinters- -:or-;-. other debris-Z hurled'i-from'i said saw: toward said:- finger guard thi ppbsiteiendofsim an tion of said housing abutting said forward section having hinge lugs, a pintle connecting the hinge lugs of the'two sections, said rear section having a rearwardly inclined end with a narrow transverse1y-disposed exit formed between its sides and said table, lugs extending from the sides of both said sections, cap screws fitted through the lugs of said forward section and into said table, and studs having Wing nuts fitted through 10 said rear section arranged substantially as and for the purpose set forth.

LEON L. CRANE.

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