US1418513A - Carpenter's plane - Google Patents

Description

y cnnrnivrnns PLANE.

` Application filed July 10, 1920. Serial No. 395,300.

To all whom t may concern.A

Be it known that I, CYRUs BAILEY', a citizen 'of the United States of'Ainerica, and a resident of Chicago, Illinois, (where he is now living and receives mail), havezinvented a certain new and useful Improvement in Carpenters Planes, of which the following is a specification. v i

This invention contemplates certain improvements on the plane shown and described and covered broadly in Patent No. 1,348,923. u Objects of the improved coiistruction'are to provide means to facilitate the adjustment of the bit or yblade to insure anaccurate cutting action; to provide means for locking the tilting handle against movement, so that the plane can be used like the ordinary tool in which the bit orI blade is not movable; and to provide certaindetails and features of construction and combinations tending to increase the general efficiency and the desirability of a carpenters plane of this particular character.

To these and other useful ends the invention consists4 in matters hereinafter set forth and claimed and shown in the accompanying drawings, in whichp v Fig. 1 is a longitudinal'sec'tion of a carpenters plane embodying the principles of the invention. l

Fig. 2 is a verticalfsection on line 2-2 in Fig. 1.

Fig. 3'is a detail section on line 3 3 in Fig. 1.

Fig. 4 isa detail section on line 44 4 in s 'thus illustrated, the invention comprises a flat body 1 having sides 2 and a transverse slot 8 at the bottom thereof.

`The bit or bladeholder4 4 forming a bed'for the bit end ispivoted at 5 between the sides f 2 and has arearwardly extending rigid portion 6 which is bifurcated at .its rear end to embrace the base portion 7 of the handle 8,v

oted at ll'on the base portion 7 of the handle, whereby Athe tiltingfmovement of the latter,whenthe plane is shoved forward and drawn back in theordinary manner, causes the blade or bit holder 4 to tilt .about its pivot 5, in a manner that-will be readily understood. This tilting action, however, can

Specification of Letters Patent.

i Patented June 6,1922.

be prevented by rotation of the' thumb wheel 12 which is inserted through the rearportion of the handle base 7, and which isy 'provided with a lscrew'l) for Vengaging the flat spring 14, which latter is rigidly secured: to the body 1 by'means of a-screw V15, in the manner` shown. 'When the spring 14 is pressed downward by rotation of thepvscrewf12,and by the pressure of the screw v18, it thereby ltion about its fulcrum on-the bodyfl, so that theedge of thebitis heldincuttingposition. The screwdevicel is applied to the vrear extension 6'of the yblade or bit'holder ic. f

e5 holds the handle'S; against anytilting -movto regulate thetilting "action of the latter. `The blade orbit 17 v is secured to the cap plate -18 by. a screw 19,y the'headv ofwhich latter is adapted to be received in thev round'openi'ng 'i .20 formed in thev upper.' extensionofy the blade or bit liolder`4, so that the cap plate 18 is non-adjustable up anddown on the holder.

or bed for the planeand the screw 19 thus forms a pivot about' which th'eblade vand its cuttingfedge can be oscillated Vin 'the'slot 3,

during adjustment of the blade, thereby/to accurately position'the edge -off-the blade relatively to' the` flat lower surface ofthe body 1 vof the plane.v During this'adj'ustment the user canfplace a thumb` on` the` lower, portion of thepl'atel 18, while holding the planeupside down,ftherebyto keep `the blade in position, and when thedesired l adjustment is found,-the clampv 21. isthen` i applied to tightly-clamp lthe blade or :bit

' and its plate 18 in positionon theblade-or bit holder 4 previouslydescribed. `The said .1 clamp 21 has its lower portion formed with a p notch 22 `which notonl'y receives'the screw` 23, the latter being inserted in the blade or bit holder,igbut` which also affords accessv to the llower -portion'of thefplate'18, so that the latter cany be held infplace bythe thumb in words, the thumb is retained on the cap plate 18, and can remain in position, ,becauseof vthe manner previously' explained. In other'l l the notch- 22, until after the cam 24 of the `clamp isfyactuatedv to lpressthe spring .25

against the plate 18, thus using the'y screw 23 as a fulcrum by which to cause the upper and lower ends ofthe'clamp to bear rupon the' plate 18 withy sufficient, pressure to hold -the blade or bit in place. ,As stated, accurate adjustment ofthe blade requires vthat. it be held in place by the ypressurefof the thumb on the lower portion of the plate 18, and this.

pressure can beontinued until y after the v clamp 21 is firmly secured in place, by reason of the notch 22, the thumb being received in this notch when the clamp is caused to slide endwise into position, and assoon as the clamp is thus in position, and while the thumb is still in the notch 22and firmly holding the bit or blade in place, the other hand is then used to manipulate the cam 241 to clamp the bit or blade in place on the blade or bit holder 1, after theadjustment of the cutting edgeof the blade has been accurately determined, relatively to the flat bottom surface of the plane. Of course, as in any plane, the lower edges of the bit 17 and the cap plate 1S must be accurately` set or adjusted relatively to each other and this adjustment must be preserved bv tightening the screw 19, whereby the bit holding means thus provided must be used with -a tilting bed to give ythe adjustment necessary for properly ypositioning the edgeI of the blade on the bottom of the plane,

Thus a tilting blade or bit holder is provided which automatically raises and lowers the cutting edge of the blade when the plane is lmoved back andfforth, so that the edge of the.` blade will not drag on thev lumber when theplane is `mo`vedy orpulled rbacklward.V In. addition, the blade orbit holder is provided with means to facilitate the accurate adjustment of the blade or bit, and the clampingfof the same in position there- Again, -as explained, ymeans .are provided for locking theblade orbit holder vagainst tilting movement, and while la vthumb wheel 12 is preferably employed for this purpose, in themanner shown and described,it;will be understood that any suitvplate together. course, 4that this relative adjustment beable means can be employed to accomplish the desired result, whereby the plane can be 'used without the lautomatic tilting ofthe blade kor bit, and with the latter practically rigidwith thebody 1, if such is necessary or desirable."

WVith further Areference to the adjustment of the blade or bit, 'it vwill be observed that the-said. blade or bit has a longitudinal slot 26 for the screws 19 and 23', and thereby accurate adjustment of thecutting edge of the blade relatively to Athe 'lower edge of the plate 18 may beobtained before the screw 19 `is tightenedv to clamp the blade and the 1t will be understood, of

tween the blade and the plate, and the or bitand its plate are insertedV in the plane,

so that in this way thev distance ofi the cutting edge below the flat bottom surface'of -the plane is determined before the blade isv insertedin the plane. When this adjustment "of the blade is finally accomplished, it is 'then necessary-to 'true the'edge of the blade relatively tothe bottom surfacefof theplane,

so that the cutting edge will be exactly horizontal, or as nearly parallel as possible with size to provide ample clearance all around its edge for said screw, so as not to interfere with the insertion or removal of the blade orthe adjustment thereof.

.The handle 8 vcan be secured to its base 7 in any suitable or desired manner. For

example, a long screw 28 can be inserted downwardly through the handle into the base 7 to clamp the handle tight upon said base. Preferably the handle is made of wood and the base of metal. A front handle 29 can be provided and secured in any suit* able manner to the front portion of the body. t

As the screw Ahe'ad 19 fits the hole 2O l in the holder, it follows that the bladeor bit, (while vin the plane) is not adjustable up and down or slidable on the holder, or on the bed as it is called in an ordinaryplane, whereby the tilting of the holder is necessary with bit or blade holding means of this kind, for without such tilting adjustment the extent to which' the cuttingedge of the blade projects below the bottom of the p lane could not be changed (while the bladeis inuposi tion in the plane, as is necessary). to regulate the cutting action.

VVhat-I claim as my invention is 1. In means for supporting and positioning the blade or bit of a plane, a'blade or together by a screw, the said holder having an opening to receive the head of said. screw, so that the cap plate is nonadjustable up and down on said holder which forms a'bed for the bit, whereby the blade orbit al-,-

though'heldv or anchored against up and down adjustment can be oscillated to accurately adjust the` cutting edge thereof, relatively to the bottom surface of the plane,

a clamp for engaging said plate toclamp the blade or bit in position, said clamp "having a notch at its lower end to permit pressure on the lower portion of said plate to hold the blade or bit in place whiletheclamp is being adjusted into position, means for entering said notch and securing the clamp in place, and means to support and adjust said holder in position to accurately present the edge of the blade.

2. A structure as specified in claim 1,

said blade `or bit holderl having a screw which is received in said notch Vwhen the clamp is caused-to slide downward endwise into position.l

3. ln means for supporting and positionring the'blade or bit. of a oarpenters 'plane,130

"the combination of a body, blade or bit a backward, so that the edge of the blade `is said spring, thereby to prevent tilting 1no` f said device being enclosed in said base, avk

automatically raised when the plane is pulled backward, and a device carriedy on said handle and adjustable about atransverse axis into position in the bottom'poring and lowering of the, blade or bit.

K LA structure as specified in claim 3, said .device comprising a rotatable element, a

s rino'and means on said element to en ade tion of the handle. l y

5. A structure as speciied in claim 3, said handle having a hollow fbaseportion, and

portion of said device being exposed for manual manipulation thereof.

6. A structure as specied infclaimv 3, said device being applied in rear of the fulcrum of said handle. l 1. 1

7. AA plane comprising a body, a blade holder pivoted on said body and provided with a rearwardly extending rigid bottom portionoverlying the body in rear of said pivot, a blade adjustably mounted but anchored against up'and down slidin movement on said holder in front of sai pivot,

so that the cutting edge of the blade may be c raisedv and lowered only by up and down tilting motion of said rigid bottom portion of the holder, a 'clamp' having itsllower end.

yprovided with a notch, means torentersaid notch to hold theclamp in'postion to clamp theblade in position, said notch permitting pressure on the blade during the adjustment `thereof,land also while/the clampis being moved endwisey into position, andl holder to ensure accuratepresentation of the` v cutting edge of the blade, after the bladeis secured on said holder. Y tion of the handle lto prevent said tilting lmotion of the holder when it is desired to use the plane without said automatic rais? 8, A. plane comprising. a body, ay blade holderpivote'd on said body land provided with a rearwardly extending rigid bottom` i' adapted' for operating the plane and connected at its lower end to said rearwardly extending portion for tilting saidv holder about its pivot to raise the blade `when the plane is pulled `backward and to lower the l I ,blade when the planev is pushed forward, the

handlevthereby havingrearward and down-l ward movement to lift the blade, andfforward and upward movement to lower the blade, in combination with a. device engaging the bottom portion of thehandle in -rear y of said fulcrum to lock the handle in raised position against .backward movement wheny itis desired to usev theiplane without said raising and lowering movement of theblade.

oYRUs BAILE-Y.

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