US438654A

US438654A - Saw gummer and setter

Info

Publication number: US438654A
Authority: US
Publication date: 1890-10-21
Anticipated expiration: 1907-10-21

Description

(No Model.) 2 Sheefis -sheet 1, G. S. STROM.

SAW GUMMER AND SETTER..

Patented 001;. 21, 1890.

UNITED STATES PATENT OFFICE.

GILBERT S. STROM, OF WHITE ROCK, MINNESOTA.

SAW GUMMER AND SETTER.

SPECIFICATION forming part Of Letters Patent N0. 438,654, dated October 21, 1890.

Application filed June 14, 1890. Serial No. 355,458. (No model.)

To all whom it may concern:

Be it known that I, GILBERT S. STRoM, a citizen of the United States, residing at White Rock, in the county of Goodhue and State of Minnesota, have invented new and useful Improvements in Saw Gummers, Setters, and Cutters, of which the following is a specification.

This invention has for its object to provide a novel, simple, efficient, and economical apparatus having the requirements for gumming, setting, and cutting the teeth of sawplates; and to accomplish this object my invention involves the features of construction, the combination or arrangement of devices, and the principles of operation hereinafter described and claimed, reference being made to the accompanying drawings, in which- Figure 1 is a perspective view of the improved apparatus. Fig. 2 is a similar view looking at the side opposite to that shown by Fig. 1. Fig. 3 is a horizontal sectional view taken in a plane directly above the dies and showing the gage-bars and yoke-lever in position. Fig. 4 is a detail perspective view of a saw and a saw-clamping guide for use with the apparatus in cutting off old saw-teeth.

In order to enable those skilled in the art to make and use my invention, I will now describe the same in detail, referring to the drawings, wherein- The numeral 1 indicates a vertical standard from which radiate four die-

supports

2, 3, 4, and 5, each having its upper side provided with a transverse dovetailed groove, as at 6, to receive and hold the attachable and

detachable dies

7, 8, 9, and 10, each of which is provided with a dovetailed tenon, as at 12, to slide into and out of engagement with the dovetailed grooves of the die-supports. The dies may be secured in stationary positions on the die-supports through the medium of any suitable devicessuch, for example, as screws 13. The standard is also provided with four radiating tubular guides or

sockets

14, 15, 16, and 17, in which may be reciprocated the

bars

18, 19, 20, and 21, which carry at their lower ends the gumming, setting, and cutting tools 22, 23, 24, and 25. The tubular guides are located above the die-supports in such relation thereto that they will properly guide the tool-carrying bars to the respective dies, the bars being elevated by any suitable springs 26 and depressed by blows from a mallet, hammer, or similar instrument.

The saw-gumming die 7 is provided with a V-shaped slot or recess in its rear edge. The cutting-die S, for cutting off. or removing old saw-teeth, is provided with a straight cutteredge at its rear. The saw-setting die 9 is provided with a bevel or incline, and the sup plemental saw-gumming die 10 is provided with a curved or U-shaped recess in its rear edge.

The saW-gumming punches or tools 22 and 25 are respectively adapted to enter the recesses in the saw-

gumming dies

7 and 10 to cut or remove the metal in forming saw-teeth on a saw-plate, while the tooth-cutting tool 23 co-operates with the edge of the die 8 to out OK or remove old saw-teeth, and the setting-punch 24 co-operates with the settingdie 9 to set the saw-teeth to the proper angle.

The die-support 2, which carries the die 7, having the V-shaped recess, is provided with a straightedge gage-bar 27, which can be adj usted toward and from the front edge of said die 7 for the purpose of forming the teeth of uniform length, and also for cutting teeth of different size and bevel. The gage-bar is provided with a central recess 28 and with a slot 29 at right angles to its length, through which slot extends a screw-threaded stem 30, attached to the die-support 2, and having a clamping-nut 32 for holding the gagebarin a fixed position when adjusted.

The inner edge of a saw-plate to be toothed is adapted to abut the straight edge of the gage-bar, and to insure the correct distance apart of the teeth the gage-bar is provided with a sliding gage-stop 33, adapted to be held in a fixed position when adjusted by means of a clamping setscrew 34.

The die-support 4 of the setting-die 9 is provided at each side with alateral stud 35, with which detachably engage the hooked extremities 36 of a yoke 37 on a saw-plate-supporting arm 38, having an adjustable thumbscrew 39, on which the saw rests, while the toothed edge of the saw rests, upon the flat upper face of the setting-die 9. The sawteeth can be set to different angles by adjusting the thumb-screw to raise or lower the saw-plate. The yoke of the lever embraces the die-support 4, engages the studs 35, and rests on the front edge of the die-support, and it can be readily removed by unlocking it from the studs.

The gumming-die 10 on the die-support 5 is for the purpose of producing teeth separated by U-shaped spaces, and an adjustable gageplate 40 is provided to vary the length of the teeth. This gage plate is preferably supported by a lateral arm 41 thereon, resting against the vertical standard and having a slot 42, through which extends a clamping set-screw 43.

The gage-bar 27 can be detached, then reversed and arranged back of the setting-die 9, as indicated by dotted lines, Fig. 3, the slot of the gage-bar being engaged with the screwstem 30, which, as will be observed, is in proper position to permit such arrangement of the gage-bar relatively to the setting-die that the former can be used to guide the saw when setting the teeth thereof. \Vhen the gage-bar is to be reversed and used conjointly with the setting-die, the gage-stop 83 should be removed, for it would interfere with the saw-teeth which are to be set.

For severing or removing the old teeth of a saw I prefer to employa saw-clamping guidestrip 44, Fi 4, having a straight edge 45, adapted to bear against the die-support 3 of the cutting-die 8 and secured to the saw by clamps 46, which can be adjusted back and forth to avoid interfering with any part of the apparatus in manipulating the saw for cutting 01f or removing the old saw-teeth.

The dies are detachable'by their tongueand-groove connections, so that they can be removed and other dies substituted therefor.

The tool-carrying bars are forced downward to eifect their respective purposes by striking their upper ends with a mallet or hammer, and the springs restore them to their elevated position for subsequent strokes.

The vertical standard extends below the die-supports to form a projecting angular shank 47, which is adapted to set in a vise or in a socket in a work-bench or other support for sustaining the apparatus when in use.

' The structure is portable and possesses all the requirements for gumming and setting saws and removing old teeth from saw blades or plates.

As indicated by dotted lines, Fig. 1, the shank 47 may be provided with a screw-rod carrying a thumb-nut for clamping the apparatus on a suitable support.

Having thus described my invention, whatl claim is 1. A saw cutter and setter consisting of a center standard having a series of radiating die-supports and a series of radiating tubular guides or sockets located above and coincident with the die-supports, the cutting and setting dies carried by the die-supports, and the reciprocating spring-raised bars moving in the guides and carrying the cutting and setting tools or punches, substantially as described.

2. A saw cutter and setter consisting of a center standard having a series of radiating die-supports and tubular guides or sockets and projecting below the die-supports to form a shank adapted to a vise or other support, the cutting and setting dies on the die-supports, and the reciprocating spring-raised bars moving in the guides and carrying the cutting and setting tools or punches, substantially as described.

3. A saw cutter and setter consisting of a vertical standard having a series of radiating die-supports and a series of radiating tubular guides or sockets, the cutting and setting dies carried by the die-supports, the reciprocating spring-raised bars moving in the guides and carrying the cutting and setting tools, and the adjustable and reversible gagebar having a support common to two of the dies, whereby the gagebar can be moved and supported for conjoint operation with either of said dies, substantially as described.

4. A saw cutter and setter consisting of a vertical standard having a series of radiating die-supports and tubular guides, the cut ting and setting dies carried by the die-supports, the reciprocating bars moving in the guides and carrying the cutting and setting tools or punches, and the detachable and reversible gage-bar arranged on one diesupport in rear of a die and adapted to be removed, reversed, and applied in rear of another die, substantially as described.

5. The combination, with a die support having lateral studs, a setting-die carried by the die-support, and a setting punch or tool, of a saw-supporting arm having an adjustable screw-rest and provided with a yoke embracing the die-support and in hooked engagement with the lateral studs, substantially as described.

I11 testimony whereof I have allixed mysignature in presence of two witnesses.

GILBERT S. STROM.

\Vitnesses:

G. J. ERICKSON, O. H. BOOTH.

IOC