US1053274A - Plane. - Google Patents

Description

J. M. BURDICK & G. BODMER. PLANE.

APPLICATION FILED JULY 11,1912.

1,053,274. y Patented-Feb. 18,1913.

COLUMBIA PLANOGRAPH C0.,w^sHxNa'rnN, D. c,

UNITED STATES PATENT oEEioE.

JAMES lVI. BURDICK AND CHRISTIAN BODMER, OF NEW BRITAIN, CONNECTICUT, AS- SIGNORS T0 THE STANLEY RULE & LEVEL COMPANY, .OF NEWBRITAIN, CONNECTI- CUT, A CORPORATION OF CONNECTICUT.

PLANE.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application filed July 11, 1912. Serial No. 708,762.

To all whome' may concer-n Be it known that we, JAMES M. BURDIoK and CHRISTIAN BODMER, citizens of the United States, residing at New Britain,

Hartford county, State of Connecticut, revspectively, have invented certain new and useful Improvements 1n Planes, of which the following is a full, clear, and exact de-A scription. Y f

This invention relates to an improvement in the construction of planes, and is more a detachable cap piece provided with means for engaging with the cutter and clamping,

it in position upon its seat upon the plane bod Oiir invention contemplates employing such a cap piece and utilizing one of the parts thereof as a palm rest. More specifically, the invention contemplates the employement of a base plate adapted to be seated over the cutter and a relatively movable palm rest portion, the cutter clamping vmeans being carried by said cap piece and placed in clamping position by the movement of the palm rest relative to the base plate when the cap is seated on the plane over the cutter. In such a construction the locking parts arek housed within the palm rest portion of the cap and thereby protected against accidental displacement. Furthermore, the cap is locked against loosening movementl on the plane after the parts have o-nce been moved to clamping position. Such a construction is shown and broadly claimed in our copending application Serial No. 708,733.

` Our present invention comprises a new specific embodiment of the broad co-mbinations of structure contained in said copending application and comprises more especially the specific combinations of parts recited in detail in the` following specification and illustrated in the accompanying draw- In the drawings: Figure 1 is a longitudinal sectional view through a standard type of plane equipped with a detachable cap constructed in accordance withthe present invention. Fig. 2 is a longitudinal section through a modified form of cap detached from the plane body.

Referring to the drawings by numerals: l designates the body of a plan-e provided with side walls or flanges 2 and a detachable shoe 3 at the forward end thereof, a throat la being formed at the forward end of the plane and in the rear of the detachable shoe portion thereof. 4 designates a frog or seat for the forward end of the plane iron or cutter, and 5 an interiorly threaded boss projecting upwardly from the plane body and carrying what is commonly termed a capscrew 6 provided with the usual headed end 6a. An adjusting lever 10 hasl its 4forward end seated over the boss 5 and is provided with an adjusting head 10a. To the rear of said head is a second adjusting device comprising a lever member 8 pivotally mounted at its forward end in the plane body and engaged at its rear end by an adjusting nut 9. A plane iron o-r cutter 7 is seated on the body of the plane.

with its forward end resting upon the frog or seat 4 and its cutting edge projecting into the throat 1a, the intermediate portions of the cutter resting respectively over the forward ends of the adjusting lever 10 and of the second adjusting lever 8. This cutter is provided with the usual longitudinal slot 7a through which the cap screw 6 projects and through and wit-hin which the adjusting head 10a extends, and with a plurality of corrugations 7 b formed in its under face which are engaged by the forward end of the adjusting lever S to effect vertical adjustment of the cutting edge of the cutter. The lever 10, through its adjusting head 10a, effects lateral or angular adjustment of said cutting edge. j

The parts so far described are merely those of a standard type4 of plane which has been selected for the illustrative application of the vdetachable cap embodying our invention. This cap embodies a base plate 11 having its forward end beveled and adaptl (ll ends of a palm rest section 14 the rear portion of which is formed as a hollow convexl body serving as a palm rest. The body of the base plate adjacent the location" of the forward end of the palm rest section is provided with a key-hole slot 15, and rearwardly thereof and adjacent the end of the base plate, with a second slot 16 through which extends the lower end of a lever member 17 pivotally carried by said base plate by means of the pivot pin 1S extending transversely of the base plate between the Side walls 12 thereof. The lower edge of this lever is formed as a cam '19 and its upper end is formed with a curved offset provided with a curved slot 2O therein. Projecting downwardly from the interior face o-f the palm rest 14 is an arm or bracket 21 provided with a pin 22 fitting within the curved slot 20 and designed, when the palm rest section is moved relative to the base plate, to coperatefwit-h said slot and the upper end of said lever to move the lower cam end of the lever toward and away from the upper face of the cutter 7, or, when a clamping plate is employed in connection vwith said cutter, toward and away from said clamping plate. The forward end of the palm rest section of the cap in alinement with the forward edge of the keyhole slot 15 of the base plate, is provided with an aperture 23 designed to iit over the head 6a of the cap screw when the palm rest is moved downwardly, the sides of the palm rest adjacent said aperture forming an annular shoulder engaging the abutment formed by the head of said cap screw.

In Fig. 2, the cap shown therein is provided with the base plate 11, side walls or anges 12, pivot pin 13, palm rest 14 pivotally carried thereby, keyhole slot 15, a second slot 16 to the rear of said keyhole slot and adjacent the rear of the base plate, and with an aperture 23 in alinement with the forward edge of the keyhole slot, these parts being the same as those shown and described in connection with Fig. l. The lever member 17a, however, which is pivotally mounted in the base plate by means of the pivot pin 18EL and has its lower end formed asa cam 19a, is provided with a rearwardly extending offset instead of the forwardly extending curved offset shown in Fig. 1. This rearwardly extending offset is provided with a curved slot 20ft and an arm or bracket 21a extending downwardly from the inner face of the palm rest section 14 and carries a pin 223 engaging in and coperating with the curved slot 20a and the upper end of the lever member 17a to move the lower cam end 19a of the lever into and out `of clamping engagement with the face of the cutter The application and operation of both forms of cap is substantially the same, and

is as follows: Assuming that the cutter 7 is seated on the plane body and its parts, as is shown in Fig. 1, the detachable cap is seated over said cutter by bringing the enlarged end of the keyhole slot 15 in its base plate l1 over the head of the cap screw G and then moving the base plate and its attached palm rest section upwardly on the cutter to bring the narrow portion of the keyhole slot under the head Ga of the cap screw. lVhen this is being done, the palm rest section of the cap is in raised position, as indicated in' dotted lines in Fig. 1 of the drawings. After the base plate has been engaged with the cutter and cap screw 6, as described, the palm rest section is swung downwardly relatively to the base plate, this movement, through pins 2Q-22a, swinging the lower cam edges 19 19a of the clamping levers into frictional clamping engagement with the upper face of the cutter 7 so that by the time the pins QQ-Qa reach the lower ends of slots 2O-Q0a to stop the further relative movement between the palm rest and base plate, the cam ends 19-19a will have frictionallv engaged and securely clamped the cutter 7 in position on the plane body. This clamping engagement is such that it holds the cutter so tightly on its seat that under ordinary service conditions, its position relative to the plane body will remain unchanged. The cutter, however, is always capable of being adjusted without in any way loosening the cap.

Owing to the engagement of the keyhole slot 15 with the cap screw 6, there is a possibility that during service the cap might be loosened and slide longitudinally of the cutter 7 despite the fact that its bottom plate is held to said cutter by the frictional engagement therewith of its clamping lever. The provision of the apertures 23 in the forward end of the palm rest section is designed to prevent any possibility of such movement, and when the palm rest is moved downwardly to actuate the clamping lever to frictional clamping engagement with the cutter, the head 6aL of the cap screw projects through this aperture 23, the edges of the palm rest section adjacent said aperture forming annular shoulders engaging the abutment formed by the head of the cap screw and preventing movement of the cap relative to the plane body.

To detach the cap from the plane, it is only necessary to move the palm rest upwardly from the base plate, the application of sufficient force causing the pin 22 or 22 to move in the curved slot of the clamping lever member.and by frictional pressure, move the lower cam end of the lever out of clamping engagement with the cutter 7 When the palm rest has thus been movedupwardly and the cam end of the lever retracted from engagement with the cutter, the

forward apertured end of this palm rest section will have been moved from locking engagement with the head of the cap screw, and the base plate 11 may now be moved downwardly on the cutter 7 to bring' the enlarged end of the keyhole slot in line with the cap screw 6, whereupon the base plate and its attached palm rest may be removed from the cutter and plane body.

The structure of the cap and its connections is susceptible of modification within t-he spirit ofour invention and the scope of the appended claims.

What we claim, therefore, and desire to secure by Letters Patent is:

l. In a plane, in combination, a body provided with a cutter seat, a cutter positioned thereon, an abutment carried by said body and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, and a palm rest pivotally connected adjacent one end to said base between its ends, a separately formed cam lever being pivotally carried by one of said parts in rear of the pivoted end of the palm rest and having a curved slot therein, and a pin being carried by the other of said parts and being seated in said curved slot whereby the movement of said palm rest relative to its base actuates said cam lever to clamp said cutter on its seat.

2. In a plane, in combination, a body pro-` vided with a cutter seat, a cutter positioned thereon, an abutment carried by said body and a detachable cap comprising a base adapted to be seated over said cutter and engage the forward end thereof and also adapted to engage said abutment, and a palm rest pivotally connected adjacent one end to said base between its ends, a separately formed cam lever being pivotally carried by one of said parts in rear of the pivoted end of the palm rest and having a curved slot therein, and a pin being carried by the other of said parts and being seated in said curved slot whereby the movement of said palm rest relative to its base actuates said cam lever to clamp said cutter on its seat, the end of said palm rest being provided with a shoulder adapted to engage said abutment upon such movement to thereby lock the cap against movement relative to the abutment and its plane body.

JAMES M. BURDICK.

CHRISTIAN BODMER. Vtnesses:

I. W. CHAPMAN,

W. J. WoRAM.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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