US2582101A

US2582101A - Pruning saw jointer

Info

Publication number: US2582101A
Application number: US101567A
Authority: US
Inventors: William W Brown
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-06-27
Filing date: 1949-06-27
Publication date: 1952-01-08
Anticipated expiration: 1969-01-08

Description

1952 w. w. BROWN ,582, 01

PRUNING SAW JOINTER Filed Jun; 27, 1949 Will l'am W. Bro wn JNVEN TOR;

BY 2s MFM;

Patented Jan. 8, 19:52

I. I PRUNING SAW .ioIN'iiin William W. BrownjWheatIand, Calif.

Thisinvention relates-t new and useful improvements in saw jointers and more particularly to an adjustable saw jointer.

The primary object of the present invention is-to provide a device to hold a resilient file or abrasive and adjustably control the bending of the same to file articles of difierent curvature.

Another important object is to provide a saw jointer adjustable to accommodate saws of different thicknes s.;-

Another object is to provide a saw jointer that affords a maximum protection against injury to the user.

Important features of the present invention are the adjusting means controlling both the concave or convex curvature of the file, the provision of hand holds, which also serve as viewing openings, and the housing formed of two parts.

Other objects, features and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a side elevation of the saw jointer in operating position;

Figure 2 is a vertical transverse sectional View taken substantially upon the plane of the section line 2-2 of Figure 1;

Figure 3 is a vertical transverse sectional view taken substantially upon the plane of the section line 33 of Figure 1; and

Figure 4 is a bottom view of the holder as shown in Figure 1.

Referring now to the drawings in detail, wherein for the purpose of illustration is disclosed a preferred embodiment of the present invention, the numeral it denotes the jointer generally.

The jointer i t is formed by the sections I2 and 14 held together by the screws It and has a medial slot l8 therebetween for receiving the toothed edge of the saw 20. The side sections [2 and M are so formed that on the assembly of the jointer Ill there are recesses 22 formed therein (see Figures 2 and 3) which form openings through which a file 24 is slidingly received. As seen in Figure 2, the central recess 22 is considerably larger than the outer recesses, one of which is shown in Figure 3.

The file 24 is shown with two cutting surfaces and may be of any flexible type, metallic or otherwise. If desired, the file could be provided with only one cutting surface.

The ends of the file 24 are adjustably clamped, by screws 26, within the outer recesses 22, as

ill

Application June 27, 1949, Serial No.1f'o1,567 10laim. (01. 76-47) 2 shown in Figure 3. It is apparent that this means of clamping the file 24 permits lateral movement of the file 24 allowing the user to place new cutting surfaces in alignment withthe slot [8. Bosses 28 are provided on the section l2 and Hi to enlarge the extent of this" lateral movement of the file 24.- Hand holds 38 are provided in the jointer I 0 to permit the user to grasp the jointer firmly andto prevent possible hand injury that could be caused by the hand slipping and striking the toothed edgeof the saw 26. It will be seen in Figure 1- that the hand holds 3ilprovide openings through which the user may visually observe the file flexing operation to be explained later.

The side sections I2 and I4 are provided with a centrally located, internally threaded bore 32 to receive an adjusting screw 34.

With the foregoing description and the illustrations, it is believed the operation of the device will be readily understood. To adjust the jointer for use with a saw whose toothed edge is concave, as shown in Figure 1, the file 24 is inserted through the recesses 22 and clamped therein by the screws 26, thereby securing both ends of the file 24. The jointer is then placed in operating position upon the saw 20 and the file 24 is adjustably flexed by means of the screw 34 to conform to the concave toothed edge of the saw 20. As stated earlier, the hand holds 30 permit, the operator to see the flexing of the file 24 thus enabling him to readily make the flexing adjustment.

The procedure required to adapt the jointer for use with a saw having a convex-shaped toothed edge is somewhat different. The file 24 is placed within the recesses 22 and secured at only one end by means of the screws 26. The jointer is then placed on the saw in operating position and is pressed in against the saw edge snugly enough to flex the file 24 so that it will conform to the curvature of the saw 28. While holding the jointer in this position, the other end of the file 24 is clamped by means of the screws 2%. After, thus locking both ends of the file 24, the adjusting screw 34 is set so as to have its lower end just engage the upper surface of the file.

Regardless of whether the jointer is adjusted for curved or convex saws, the jointer is used in the usual manner, the slot 18 serving as a guide.

It is obvious that spacing means may be used between the side sections [2 and M to vary the width of the slot 18, thus serving as an adjustment to accommodate saws of different thicknesses. It is equally apparent that the lower portion of the housing may be eliminated altogether, that is, the portion that guides the saw relative to the file, thus forming a device in which the entire lower surface of the file 24 may be used simultaneously, and thereby being useful for many other purposes than jointing saws. Such other purposes or uses including the filing of curved surfaces, either convex or concave.

In view of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention, the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claim.

Having described the invention, what is claimed as new is:

A saw jointer comprising a pair of separable complementary body sections forming a housing, the juxtaposed surfaces of said body sections having registering channels therein defining a recess in said housing for receiving a file, the juxtaposed surfaces of the body sections being spaced at one side of the channels to define a longitudinal medial slot in the housing that communicates with the recess, the juxtaposed surfaces of the body sections having registering grooves that are on the other side of the channels and perpendicular thereto that define an internally threaded bore in the housing that intersects the recess, a threaded shank in the bore for adjustably bearing against a file in the recess, threaded means securing the body sections together, and means spaced on opposite sides of the shank for clamping a file in the recess.

WILLIAM W. BROWN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 277,364 Smith May 8, 1883 298,820 Bozard May 20, 1884 444,848 Pratt Jan. 20, 1891 605,550 King June 14, 1898 977,233 Stecker Nov. 29, 1910 982,458 Andrews Jan. 24, 1911 1,330,042 Knizek Feb. 3, 1920 1,538,227 Thunborg May 19, 1925 1,731,933 Morin Oct. 15, 1929 FOREIGN PATENTS Number Country Date 46,035 Sweden Sept. 27, 1917 OTHER REFERENCES Iron Age Practical Saw Jointer, Nov. 15, 1888, page 763.