US1252031A - Planer-tool holder. - Google Patents

Description

W. S. ROBINSON.

PLANER TOOL HOLDER.

APPLICATION FILED DEC. 26I I916.

mmmmv Patented Jan. 1,1918.

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. of whichlthe following is'aspecification.

. This inve tion relates to planer tools and its object is to provide an improved tool holder wherein short length cutters: may be adj'ustably secured. Q

A further object of this'invention is to provide an offset supporting shank for tlie' cutting-tool holder Qwhereby; the. point of support" of the .cutftmg tool will lie approximatelyrin'the .axis' of the supporting shank. 1 of the drawings is aside eleva- Figure.

tional viewfof a supporting shanlgjthe cuttakenon'line H of ting tool holder, and a cutting tool, a p01?v tion of he shank being broken away, F'1 g.

2 is aliorizontal section takenon line 2 2 front elevatlonal vlew of Fig.1. Fig. 3 is a of the holder, Fig. llis a sectional view I .Iiigfl-L Fig. 5.is a perspective View of anoilset supporting shank, a portion thereof beingbreken away.

Fig. 6 is a side elevational viewof the oilset.

supporting shank shown Fig. 5. to which the tool holder has been attached.

In the accompanying drawings, 1 is a supporting bar o A preferably circular base member 2 is slidable upon the shank l and is rigidly secured thereto by a split socket or clamp consisting of 3 andan end wall '3 'forme'd integral with the base member, said jaws being arranged to be drawn together by a clamping screw 4 extending through two ears 8". One of said ears is integralwith oneend or oneofthej side walls 3,"the other ear being integral 31- l I i i a rn'r ore.

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- Specification of Letters Tatent, A pplicati'oniileiiDecentbe126 ,1 316. Serial no. ream-35. 1 Q

. Fig. 1. v The cutting r shank] of rectangular; cross section which is adapted to be suitably se cured'to theltool carriage ofqa planer or simi la'r machine.

two opposite side walls.

Patentedlanli ifiifi,

Any, silltablelmeans, may pivotally securethe to gu'e intheslotted portion, 6. The clappertongue is-preferably arcuately ronndedfor beveled 'op'p osite thepivotz'l support as show-n; atw-lO 1n 7 tool '8 is adjustablysecured in a tool slot 1,1 by anysu-itable means,

that herein shown beingaset screw The means per tongue 1n the-(position shown nrFigl 1 comprises a l ea f s prin 13 secured to; the

clappenbox 5-.by:one or more screwsll and for normally holding the clap-,.

a pin, 15 carriedgby the clapper tongue 7 Upon the non-cutting or returnstroke, the

spring 123 yieldstoi 'allow the tongue to turn upon ts p votasflthe tool drags over the work. Upcn the forward or base 2 is as follows:.A central pivot member 17 axially carried the baseportion of the. rotatably seated in a: central 18 inthei-b ase member 2', In the.

clapper box is open ng base member and. concentric w1th the central opening is an annular 'T-slot19 .openingupon the faceadjacent the clapper box.

Through a suitably shaped hole 20 is inserti ble a T -bolt I 21 or preferably two. .T-bolts, 7 head 22 adapted 'to; underlie the walls 230i the T-slot 19. The

each having a flanged force, applied by the machine 7 to abut against the.

cutting stroke the force applied bythe spring 13 and later.

p for adjustably and-rotatably securing the clapper box structurev 5. to the head s22 of the bolts are of-any desired'shape to slidably and non-,rotatably secure each bolt in the T-slot, The basezportion oiithe clapp'erQbox 5 hastheboltholesil l through,

which the bolts 21 are adapted to structure 5 is in this manner rigidly and adjustablysecured to the base member 2.

In Fig. 5, I have shown'a supporting bar or shank. 27 having'an intermediate transverse portion 28 and an offset portion 29;

be passed. lVashers 2'5 and-nuts26 are mountedonrthe':

outer ends of thebolts; The clapper box- When the circular tool holder 5 and the base member 2 are secured upon the ofiset portion, the point of support of the cutting tool will lie approximately in the axis of the bar. If desired, the intermediate portion of the bar may be cut away to provide an, arcuate surface 30 as indicated in Fig. 5 to accommodate the upper portion of the base 2 and clapper box 6. From the foregoing it will be seen that the base member 2 may be securely clamped to the supporting bar at any point, thereby roughly adjusting the tool. The clapper box structure may be rotatably adjusted upon the base and then rigidly secured thereto, thereby adjusting the tool to the desired angle. The cutting tool is thereupon adjusted in the tool slot of the clapper tongue and rigidly secured by the set screws thereon for taking the desired depth'of out. It is apparent that, with the foregoing described improved tool holder, long-shanked planer tools and special side tools are unnecessary and short-length cutters may be employed more efliciently than in prior structures.

While I have described in considerable detail the preferred embodiment of my invention, I would have it understood that I will be limited only by the appended claims.

I claim as my invention: 1. A tool-holder having, in combination, a supporting shank; a base member slidable thereon and adapted to be rigidly secured thereto, said base member having a central opening, an annular T-slot concentric with said opening, and an insert holecommunificating with said T-slot; securing means comprising a pair of clamping jaws rigid with said base member and a clamping screw ;'a clapper box structure comprising a base portion having a transverse slot therein and a hole extending through the base portion and communicating with said T-s lot, a central pivot rigid with said base portion and seated in said central opening, and a clapper tongue tool-holder pivotally mounted in said transverse slot comprising a body portion having a tool slot, a rounded end portion opposite said pivotal mounting, and means for securing a tool in said tool slot; and means for rigidly securing said clapper box structure to said base member comprising a T-bolt insertible through said insert hole and having a flanged head adapted to underlie the walls of said T-slot and a body portion insertible through-said communicating hole and means for securing said bolt in said communicating hole.

A tool-holder having, a supporting shank, a base thereon and adapted to be thereto, securing means comprising clamping jaws rigid with said member and a clamping screw, and a clapper box structure comprising a base portion rotatably adjustable upon and rigidly secured to said base member and having a slot therein and a clapper tongue tool-holder ed in said slot, said clapper tongue having an arcuately rounded end portion and a tool slot, Y

3. A tool-holder having, in combination, a supporting shank having an offset portion, a base member slidable thereon and adapted to'be rigidly secured thereto, and a clapper box tool-holder rotatably adjustable upon and rigidly secured 'tosaid base member,

in combination, member slidable rigidly secured pivotally mountthe point of support of the tool lying approximately in the axis of the supporting shank.

4. A tool-holder having, in combination, a supporting shank having an intermediate transverse portion having an arcuate surface andan offset portion, a circular base member slidable thereon and adapted to be'rigidly secured thereto, and a circular clapper b'ox tool-holder rotatably adjustable upon and rigidly secured to said base member, the point of support of the tool lying approximately in the axis of thesupp'orting shank, the circular base member abutt'inga'gainst said arcuate surface. I

5. A tool-holder having, in combination, a rectangular shank, a rectangular socket member having'inclosing walls adapted to surround the shank, said socket member being split at one corner, ears on the socket member at opposite sides of the split, and a clamping screw for drawing the ears together and thus drawing all of the walls of the socket member into engagement with the shank to secure the socket-member in, adjusted position. I

In testimony whereof, I have hereunto set my hand.

WILLIAM S. ROBINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner oflatentgfi Washington; DC. i

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