US1475700A - Extension plane - Google Patents

Description

Nov. 27 1923.

Filed Aug. I5,

F. W. HUMFHlQl-:Ys`

EXTENSION PLANE mmm j 2 Sheets-Sheet l Nov. 27 1923.

F. W. HUMPHREYS EXTENS ION PLANE Filed Aug- 5. 1922 2 Sheets-Sheet 2 L/WNTOR a/nWH/m/o/Lreys. mf f v I f f l M W1 TNESSES HIS /ITTM'Y Patented Nov. 27, 1923.

UNITED STATES FRANK W. HUMPHREYS, GF OCEAN CITY, NEW JERSEY.

EXTENSION PLANE.

Application led August 3, 1922.

To all whom t may concern:

Be it known that I, FRANK W. I-IUuminers, a citizen of the United States, residing at Ocean City, in the county of Cape May and State of New Jersey, have invented' certain new and useful Improvements in Extension Planes, of which the following is a specification.

My invention relates to wood-working tools and more particularly to planes.

The object of the invention is to provide an attachment of simple construction by which a short plane may be equipped with a long detachable face plate and thereby perform the function of a longer plane.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a plan view of my attachmentl with a plane secured therein,

Figure 2 is a sectional elevation of the device as shown in Figure 1, taken on the line 2 2 of Figure 1,

Figure 3 is a vertical sectional view taken on the line 3-3 of Figure 2,

Figure 4: is a vertical sectional view taken on the line 1 4 of Figure 2,

Figure 5 is a plan view of the shoe forming the improvement, and

Figure 6 is a side elevation of the device as shown in Figure 5.

In the drawings, the attachment is shown as consisting of a shoe having a face plate 7 and sides 8. The shoe is of substantially channel-shape 'cross Section and has a slot 9 in the face plate for receiving the bit or blade 10 of an ordinary plane 11.

In order to secure the plane 11 in position, the opposite sides of the shoe are provided near'each end with opposed longitudinal slots 12 flush with the top surface of the intermediate body portion or face plate of the shoe. Cross bars 13 have reduced ends 14 slidable in slots 12 and each cross bar is adjustably secured in posit-ion by a pair of set screws 15 which engage the bottom of the shoe and force the reduced ends of the cross bars against the top walls of Slots 12.

Angular locking bars 16 are supported on each cross bar at right angles thereto, or longitudinally of the shoe, and their inner ends are turned downwardly as indicated at 17 to Contact with the face plate of plane jointer plane.

Serial No. 579,316.

11. The locking bars 16 have longitudinal slots 18 and thumb screws 19 are disposed through these slots and threaded in vertical apertures midway of the ends of cross bars 13.

In applying a plane to the shoe, cross bars `13 and locking bars 16 are first moved outward so that plane 11 will be accommodated between the inner ends of bars 16. By unseating screws 15 and relieving the binding engagement of ends 111 against the top walls of slots 12, cross bars 13 may be moved outward in slots 12. By loosening screws 19, bars 16 may be moved outward, by reason of slots 18. Screws 15 are tightened before or after adjustment of locking bars 16 and when plane 11 has been placed in the shoe, the screws are tightened and ends 17 of bars 16 clamped firmly against plane 11. `This adjustment facilitates the application and removal of the plane, and the fastening means insures positive retention of the parts in assembled relation.

When a plane is applied to the shoe as described, the length of the plane will be eX- tended so as to convert a smaller plane into a larger plane, such as a smoothing plane into a fore plane, or a fore plane into a After the cross bars 13 have been adjusted and anchored by set screws 15.v the angular locking bars 16 are adjusted so that downturned ends 17 will engage the top of plane 11 and then tightening thumb screws 19, locking bars 16 will be held against movement and the handle and blade of plane 11 will serve their usual functions when the plane is in use as thus converted. It is to be understood that the device may be adjusted to accommodate different sized planes or those varying in length.

`While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Havingthus described my invention, what I claim as new and desire to secure by Letters Patent is 1. An attachment for planes comprising a shoe adapted to receive a plane; ad-

justable clamping means for securing the plane in operative position in the shoe; and means for permitting movement of said Clamping means to various adjusted positions on said. shoe.

2. An attachment for planes comprising a shoe adapted to receive a plane; and elan'iping means on said shoe, said clamping means being arranged' to be moved to various adjusted positions i'or accommodating planes oi various sizes.

3. An attachment for planes comprising a shoe adapted to receive. a plane; supporting means mounted adjacent each end of said shoe and capable oi longitudinal movement to various adjusted positions; and clamps ifor engaging said plane, said clamps being longitudinally adjustable on said supporting means- 4. A Convertible shoe tor planes'eornprising a substantially channel-shaped member having sides with slots; Cross bars longitudinally adjustable in the slots7 and longitudnal Clamping members adjustably carried by the cross bars and having parts at their inner ends to clamp a plane against the shoe.

5. An attachment for planes comprising a substantially channel-shaped shoe having opposed slots in its sides near each end; cross bars having their ends slidable in the slots; means to hold the cross bars in adjuted positions in the slots; locking bars having slotted portions resting upon the cross bars and downwardly extending prtions at their inner ends adapted to engage a plane placed in the shoe, and clamping means earried by the cross bars and disposed through the slots of the looking bars to hold the locking bars in adjusted positions.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

FRANK W. HUMPHREYS.

Witnesses:

C- RAY, HUI-ases, R. HUMPHREYS-

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