US703348A - Saw jointer and gage. - Google Patents

Description

, Pat

C. CDDNNERI ented lune 2 ,`|902.

SAW JOINTEB AND GAGE.

(Application led Nov. 23, 1901.)

(No Mpdel.) l

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Ii TtR A lNGT U c UTED STATE-S PATENT OFFICE.

CHARLY MCDONNER, OF VVAUSAUKEE, VISOONSIN, ASSIGNOR TO JOSEPH HRBAOEK, OF BESSEMER, MICHIGAN.

SAW JOINTER AND GAGE.

SPECIFICATION forming part of LettersPatentNo. 703,348, dated .T une 24, 1902. Application filed November 20, 1901. Serial N- 83,033. (No model.)

To @ZZ whom, it may concern:

Be it known that I, CHARLYMCDONNER, a citizen of the United States, residing at Wausaukee, in the county of Marinette and State of Wisconsin, have invented a new and useful Saw Jointer and Gage, of which the following is a specification.

The present invention relates to saw jointers and gages; and the object thereof is to to provide a simple instrument of this character which may be adjusted to the different sizes and styles of saws to be operated upon.

The different sizes of crosscut-saws that the ordinary gage now in common use can operate upon are limited for the following reasons: In the iirst place,'in this class ofl saws the curve of the cutting edge is not uniform and it is always at least desirable to out both of a pair of raker-teeth simultaneously and at zo the same time protect the Vadjacent cutters. Now on a small saw the teeth are located closer together than on a large one, and as the gage should rest upon the cutting-teeth located on opposite sides of the rakers to be operated upon, so that both rakers will have an equal portion exposed to the cutting action, it will be evident that the gage-socket of an instrument that will just span the rakerteeth of a large saw will be large enough to 3o receive not only the raker-teeth, but also several cutting-teeth of a small one. In like manner the socket of j a small gage that will be large enough to receive the raker-teeth of a small saw will not nearly span those of 3 5 larger sizes.

One of the important features of the invention /resides in the construction of a gage which can be extended and contracted, so that it can be applied to and operated upon 4o various kinds and sizes of saws having teeth spaced unequal distances apart.

A further feature relates to means which permit of the raising and lowering of the gage-plate without regard to the extension of 4 5 the gagebody,which extension does not therefore interfere with the adjustment of the plate.

A stillfurther feature relates to novel mechanism for adjusting and locking the gage- 5o plate and :in such other details as are hereinafter set out more fully.

In the accompanying drawings the preferred embodiment of the invention is illustrated and the construction and operation thereof Vis fully described in the following specification.' The invention is, however, not to be limited to the specific form shown, but is open tosuch changes and modifications as the appended claims will cover.

In the drawings, Figure 1 is a perspective 6o view of a saw jointer and gage embodying the present invention. Fig. 2 is a vertical longitudinal sectional View through the same. Fig.` 3 is a vertical transverse sectional view taken on the line a: a; of Fig. 2, and Fig. 4 is 65 a horizontal sectional view taken on the line "y y ofl Fig. 2.

Similar numerals of reference designate corresponding parts in all the figures ofthe drawings.

The ubody of the instrument is made up of two sections,(designated, respectively,10 and 11,) which sections are arrangeddn alinement and are slidablyconnected at their inner ends, so as to be movable toward and from each other. To this end the sectional body 10 is provided at its inner edge with a projecting tongue 12, that overlaps the section 11, and is slidably mounted in a channel 13 in said section. The tongue 12 is provided with a lon-'8o gitudinal `slot 14, and a holding screw 15 passes through said slot and is threaded into the section 11, whereby the tongue may be held against movement in the channel 13. The adjacent edges of the two sections are connected at their upper ends by a pin 16, slidably mounted in alined sockets 17 and normally held against movement in either direction by set-screws 18, threaded into the walls of the sections and bearing againstsaid 9o rod. The body is provided on one face intermediate its side edges with a longitudinallydisposed rib 19, forming an abutment for a jointer-iile 20, which file is held in place by brackets 2l, either secured to or forming an 95 integral part of the rib 19 and provided with depending terminals 22, having set-screws 23, that bear against the outer edge ofthe file, the inner edge of said file fitting in a groove 24, located just beneath therib ,19-` A longiloo tudinal flange 25 projectsfrom the opposite side of the upper edge of the body, this iiange being broken by the usual gage-plate socket 26, half of said socket being preferably located in one section and half in the other, the ends of the socket constituting guide-shoulders, that are movable toward and away from each other when the sections are relatively moved. In this socket is mounted a gageplate comprising independent sections 27, which are arranged in overlapping relation. In the form shown the overlapping portions of the sections 27 are cut away and interlock, so that the plate as a whole presents a smooth uppersurface. One of these sections is prei"- erably provided with a projecting portion 28, so that said section extends across the entire socket. Each of the sections 27 is mounted independently of the other upon -one' of the body-sections and has separate and independent adjusting mechanism. As the mechanism for both is similar in all respects, only that employed for one need be described. The section is provided with a depending shank 29, that is slidably mounted in an opening 80, made forfthe purpose, and is provided on one face with a rack 31. An operating-stem 32, journaled in the upper end of the body-section, is provided at its inner end iwith teeth 33, that mesh with the rack 3l, while its outer or exposed end is channeled, as at 34, to receive a screw-driver or similar actuating device. A set-screw 35 bears against the opposite side of the shank 29 to normally hold the same against movement.

'The application of the device will be obvious to those skilled in the art. When a saw is to be jointed, the jointer is placed upon the same with the file 2O bearing upon its teeth, which can be'jointed in the usual manner. When the instrument is to be used as a gage for the raker-teeth, it is supported by means of the fiange 25 upon the upper ends of the cutting-teeth and the gage-plate is adjusted to the desired distance below the'upper edge of the body, or, in other words, the depth to which the teeth are to be cut. If the teeth are spaced at distances too far apart for the proper application of the file, the bodysections are separated by loosening the holding- screws 15 and 18 and sliding said sections apart, thus broadening the iile-guide socket.

' In like manner the socket may be narrowed by sliding the body-sections toward each other. This, it will be observed, does not interfere with the adjustment of the gageplate, as each section is independently operated and held. By this construction it will therefore be seen than an exceedingly useful improvement has been made in instruments of this character in that provision is made for the adjustment of the same to meet the requirements for various classes and kinds of work.

From the foregoing description itIis thought that the construction, operation, and many advantages of the herein-described invention will be apparent to those skilled in the art without further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the being movable toward or from each other upon the relative movement of the sections. 3. An instrument of the class described comprising sections slidably connected and movable longitudinally upon each other, eachof said sections having a file-guide shoulder, said shoulders being movable toward or from each other on the movement of the sections, and means for holding the sections against relative movement.

4. An instrument of the class described, comprising sections arranged in .alinement and slidably connected at their inner ends, file-guide shoulders carried by the sections, and movable toward and from each other upon the relative movement of said sections, saw-positioning devices carried by the sections and located outside of the shoulders, and means carried by one section and engaging the other to hold said sections against relative movement.

5. An instrument of the class described, comprising slidably-associated sections arranged in alinement, one of said sections having a tongue that overlaps the other section and is provided with a longitudinal slot, and a screw passing through the slot and engaging the adjacent section to hold said sections against relative movement, said instrument having a transversely-disposed le guide socket, a portion of which is located in each section.

6. In an instrument of the class described, a body, a gage-plate mounted upon the body and comprising sections movable toward and from each other, and guide-shoulders located at the outer ends of the gage-plate and movable toward and from each other.

7. In an instrument of the class described, a body ha-ving an eXpansible and contractible `tile-guide socket, and an expansible and contractible gage-plate mounted upon the body in the socket thereof.

8. In an instrument of the class described, a body comprising sections movable toward and from each other and having coacting guide-shouldersV movable therewith, and a gage-plate located between the guide-shoulders and comprising sections, one of said gage-plate sections being mounted on each body-section and movable therewith.

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9. In an instrument of the class described, a body, an expansible and contractible gage plate carried by the body and comprising separate sections, and means for elevating and depressing each section independently of the other.

10. In an instru ment ofthe class described, an expansible and contractble body having an eXpansible and contraotible file guide socket, a gage-plate carried by lthe body and located in the socket thereof, said gage-plate comprising separate sections, each section having a stem that :is slidably mounted upon the body, and operating means-engaging said stems to move the same and thereby elevate or depress the sections.

Il. In au :instrument of the class described, a body comprising sections movable toward and from each other, a gage-plate comprising separate sections mounted upon and movable with the body-sections, and means carried by each body-section and engaging the gagesection carried thereby to elevate and depress the same.

12. In an instrument of the class described,

a body comprising sections movable toward i H. G. LAUN, J osEPH HRBACEK.

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