US1034593A - Saw-set. - Google Patents

Description

F. A. DRAGER.

' SAW SET.

APPLICATION FILED JAN. 8, 1912.

1,034,593. PatentedAug. 6,1912.

2 SHEETS-SHEET 2.

COLUMBIA PLANOYOIIAPH CO" WASHINGTON, D- C;

F. A. DRAGER.

SAW SET.

APPLICATION FILED JAN. 8, 1912.

1,034,593. r Patented Aug. 6,1912.

2 BHEETSSHEET 1.

COLUMBIA PLANOGRAPH CO., WASHINFINN, D- C.

FREDERICK A. DRAGER, or FLINT, MICHIGAN.

SAW-SET.

Specification of Letters Patent.

Patented Aug. 6, 1912.

Application filed January 8, 1912. Serial No. 670,011.

To all whom it may concern.-

Be it known that I, FREDERICK A. DRAGER, a citizen of the United States, residing at Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in Saw-Sets; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to metal tools and implements, and more especially to sawsetting tools wherein the set is slidably mounted and spring projected; and the ob ject of the same is to produce a tool of this kind in which the force struck by the hammer may be adjusted in several different ways.

To this end the invention consists in the specific means for mounting or housing the spring within the barrel so that its tension may be increased or decreased, and in the use of a special form of latch adjustably pivoted to the handle so that its action may be varied to compress said spring to a greater or lesser degree before the hammer or plunger is released.

The following specification describes my invention more in detail, as shown in the accompanying drawings wherein Figure 1 is a side elevation of this improved saw set complete, and Fig. 2 a central vertical longitudinal sectional view thereof. Fig. 3 is a plan view of the same, and Fig 4: a bottom plan. Figs. 5 and 6 are sectional views on the lines 55 of Fig. 2 and 6-6 of Fig. 1, respectively.

In the drawings the numeral 1 designatesa barrel made up of upper and lower sections or halves of semi-cylindrical shape, preferably cast with lips 2 along their edges which come together in pairs when the halves are assembled and may be connected by bolts or rivets 3 as seen in Fig. 1, the upper section having a longitudinal slot 4 and the lower section a longitudinal slot 5 for purposes to appear hereinafter. Internally the rear ends of said sections are threaded to receive a threaded plug 6 which closes the rear end of the barrel and is adjustable for a purpose to appear below. The front end of the lower sect-ion carries a depending inner jaw 7 having through it several threaded holes for a set screw 8 which may be adjusted so that the inclination of the saw blade S may be varied as desired. The upper section is made a little longer than the lower section, and its front end is provided with an outer jaw 9 pierced with an upright slot 10 through which passes a headed screw 11 whose tip supports the anvil 12 within this jaw in such manner that it may be set higher or lower according to the length of the saw tooth to be set. The hammer or plunger 13 is by preference a solid piece of metal of cylindrical contour so that it will fit within the tubular barrel, with its front end or nose 14 shaped to do the setting and possibly tempered to with stand the blows that it is to strike, and its rear end 15 cut oif fiat so that it may be borne upon by an expansive spring 16 coiled within the rear portion of the barrel forward of the plug 6 as shown in Fig. 3. This hammer is mounted slidably within the barrel, and it is prevented from rotating therein by means of a screw 17 passing upward loosely through the lower slot 5 which of course is made of sufiicient length to permit the necessary movements of the hammer and is properly disposed so that its nose 1 1 shall stand upright as well understood. In the upper side of the hammer is formed a rather long recess 18 whose front end 19 may be beveled and whose rear end 20 has an upright wall for a purpose to appear, and this recess stands below the uppermost slot 4 which is made suficient-ly long for the action yet to be described.

The upper barrel section is preferably cast with ears 21 between which at 22 is pivoted the front end of a handle 23 which overlies the barrel and is normally raised by means of an expansive spring 24 between these elements with its extremities mounted on studs 25 to prevent its displacement. At about its midlength there is formed on the under side of this handle a web or fin 26 having a plurality of transverse holes 27 through it, and'28 designates a latch or push bar whose upper end is pivotally mounted on a pin 29 adapted to pass through any of said holes and whose lower end is rounded on its under side as at 30 so as to produce a nose which will reliably engage the upright rear end :20 of the recess 18 when the handle is raised as seen in Fig. 1 but which will slip off or out of engagement therewith when the handle is depressed to about the point shown in Fig. 2.

All parts are by preference of metal, of

the desired sizes, shapes, proportions and materials, and the operation of a saw set is too well known to need amplification here, I may say, however, that when the set screws 8 and 11 have been properly adjusted as the character of the saw and the length and thickness of its teeth demand, the plug (3 may be adjusted to increase or diminish the strength of the spring 16 and therefore vary the force of the blow which will be delivered by the hammer 13. It will be clear, also, that when the pin 29 is adjusted into the rearmost hole 27 of the lever or handle 23, the latch or push bar 28 will shove the hammer farther back than when the parts stand as seen in Fig. 2, with the result that the spring 16 will be more forciloly compressed and. the hammer will have a longer stroke within. the barrel. lVhen the adjustments referred to are in the opposite direction, the force of the blow and the length of the stroke will be correspondingly reduced.

What is claimed as new is:

In a saw set, the combination with a tubir lar barrel having a longitudinal slot along its top, internal threads at its rear end, and

adjustably mounted in the threaded rear end of the barrel, a coiled expansive spring therein forward of said plug, and a reciprocating hammer mounted therein forward of the spring and'having in its upper side a recess registering with said slot in the barrel and provided with an abrupt rear end, for the purpose set forth. .v V

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FREDERICK A. DRAGER. Y

lVitnesses GnAoE L. GLi-irr, ALFRED E. CATTERFELD.

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

Washington, D. G. Y

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