US24118A

US24118A - Machine fob filing saws

Info

Publication number: US24118A
Authority: US
Publication date: 1859-05-24
Anticipated expiration: 1876-05-24

Description

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/f IMM@ 6/1/ M/f/ y N.,PETERS. PHOTC-LITHQGRAIJIIER WASHINGTON D P A. HADLEY, OF LYNN, MASSACHUSETTS.

MACHINE ron FILING-smits.

Specification of Letters Patent No. 24,118, dated May 24, 1859.

To all whom 'itv may concern: v

Be it known that I, A. I-IADLEY, of Lynn, in the Commonwealth of Massachusetts, have invented an Improved Machine for Filing Straight and Circular Saws; and I do hereby declare that the following is a full and exact description thereof, reference being had to they accompanying drawings, and to the letters of reference marked thereon.

To enable others skilled in the art to which my invention belongs to make andy use the same, I will proceed to describe its construction and operation.

Figure 1, of the drawings represents a perspective view of the machine when used for ling straight saws; Fig. 2, represents a perspective view of a circular saw mounted on a shaft. v

a, represents a straight saw which is clamped between `a plate d, and a rail e, by means of a set screw o, which screws through the end of an arm b, extending from the rail. The rail slides in grooves f, f, in frame g; the bottom of the frame has a slot through which the pawl no, works in combination with ratchet teeth in the under surface of the rail. A piece i", i, j, z', is made with two arms 71', 71', which are pivoted to the frame g at la, h, only one of these pivots being visible in the drawings. Two rods f', f are pivoted to staples extending from the under surface of the railframe g, at g, g.

The whole combination of parts above described a d o e o g c' 2" j" ff, can be removed from the machine or may be attached to it in the following manner. The lower ends of the rods f, f', are passed into holes made through sleeves i', and table o', and the pivot z', is passed into ring lo, until the rim j", rests against the upper surface of ring le, and the pawl oo, isin contact with the ratchet teeth in the bottom of the rail e. The rail and railframe can now be moved on pivotslz., 7L, the rods f,.], playing freely through the sleeves z", c, and table o. When the rail and railframe have been set at the desired inclination, they can be conlined in their position by screwing up the set screws h, it', until their ends bear firmly againstvthe rods j, f, in the sleeves. The ring k, is permanently fastened to the table o, by two supports y', y'. The pawl w, is pivoted to the upper end of an arm fw, and is held and pressed upward by a spring y,vriv eted to arm w. The lower end of the arm w, is formed into a hub which is fastened to a shaft s, by means of a set screw` (not shown in the drawings). l

The shaft s (part of which is represented in the drawings as broken away) has itsV bearings in standards o, lv, the rear end lof the shaft carrying a crank t, anda connecting rod u, being pivoted to the lower end of the crank, while the other end of the connecting rod u, is jointed to a staple d', which extends from the rear end of stirrup e.

The central part of this stirrup has a hole loosely fitting the shaft of a horizontal ratchet wheel t, and a collar o, slotted at a, is fastened to the shaft of theA ratchet wheel above the stirrup, by means of a set screw (not shown inthe drawings). wThe top of the ratchet wheel shaft is pointed as seen at Z, andy thel center line of the sha-ft is in line with the center of ring la. A pawl 7c', is pivoted to t-he---table-\o--,'and `is held against the teeth of the ratchet wheel by a spring Z. Another pawl j', pivoted to the front part of/the stirrup is also made to engage with the teeth of the ratchet wheel by means of a spring m.

The front endof ythe stirrup can be lengthened .or shortened 4by moving the slotted piece n', in or out and then confining itby the set screw passing through the slot.

The play ofthe rear end of the stirrup is regulated Aloy a screw az, which screws through astaple o, fastened to table o", the staple d, bearing against the end of the screwv ae, in consequence of the tendency of a spiral spring o', fastened at both ends to the staples d', and o. 'By screwing the screw az, in or out more or less play may be given the rear end of the stirrup.

The table o', has slots p, in its sides which lit over tongues g,projecting from the horizontal portion r', of the main lframe of the machine, soV that the table o, may be moved in or out upon said tongues.v Y- l The upright portion s', s', of the main frame is made with arches 27,15', forming parts of one circle, the arches being grooved on their inner sides as seen at m. `Y

The block frame o', is rounded at the top and bottom at a', u, so as to fit'the circle of the arches, and has projections which corre* vspond with the grooves oo, inthe arches.y

screwin into the arches t', t', `(only one plate a and screw s being shownin thedrawings) It will be seenfrom" the above that' vtheA block frame fv, can play in the grooves and can be moved YVaround itsf center, `an

can be confined in any position by means' t jectngfromltbe block,andtheother^en of the lever c, is connected tof a crank g","by means of a rod f, and knuckle joint e. The crank g, is keyed to thej end ofdriving shaft 11,, which has its bearings in staples fw, w, fastened to `frame s-, sf; thershaft may beldrven either bymeans of a handle vattached toA flywheel Z, `or iniany other suitable manner. A bevel pinion i, uponjshaft h, takes into a bevel wheel 7', which is provided with a pink, projecting downward fromV a point' near itsvperiphery.

When the tableA 0, has been movedfor.-V ward on the tongues gf, as far as it will go, the clin-Ja, will strike the end n', ofthe t st-irrup e', once during one revolutionv of the bevel Wheel j, moving this endof the stirrup sidewise, more or less according to the adjustment ofthe piece;nv. "Of course the farther the piece-fro', ismadeto project thelonger will the pin Ic, bexincontact with it and the greater will be. the Vsweep p imparted to the end of the stirrup.

Two long screws z, z, screw through a block y',their ends supporting and turning in a bracket m. j j

Platesare fastenedV to the .top andi bottom of the bracket which serve'v as bearinofs for a shortvertical shaft nQto' which aufile g, is. fastened by means of clamps" and set screws 1*,02 A slottedY wing p, extending. from the top part of shaft n", in combinationrwith a set screw screwing-into the top of the bracket m,nserves to turn the file-around the axis ofthe shaft n, soas to give the Vsides ofthe saw teeth more or less inclination'. on l v y When 1t; is deslredto `file circular saws,

' l l Il @he parts a: bs 0 da evrgavf 7 f rz 7 .7,5

z, are removed, and the Vshaft z3', (lipon L which the circular saw y, is mounted as seenV in Fig` 2,) is inserted between the points m, and Z, and the screw m, is turned down until it enters-the little cavity in the end of the shaft z-,"the" point-s m, and Z,

will then serve as pivots. for the shaft z.

The screw m, passes through a block Vin, whlch' can be moved ina slot inthe piece 20,

frame is providedl by means of adjusting screw o.` The piece` p, extends from the upper end of a curved rod g, the lower end of which is firmly screwed. into a standard r, fastened to table o. By moving the block n, 1n the slot tlieinclination of the shaft z, and

consequently the inclination or bevel of the teeth oflthercircularsaw can be determined.

AA' clampA a, is fastened to the lower end of mined by either adjusting; the circular `saw shaft' by means fof block n, andv screw 0,or by setting the saw plate a, atthe necessary inclination-by means of rods j', f', and set i screws 7L", 7L. By adjusting: the block frame o', iniits` circular ways wrrso as toincline the fileA g, front the vertical line, the bevel of the saw teeth can be increased beyond. the limits of the adjustment obtained by means of block u, and screw o, or rods f', f, and set screwsh,` h. angle between the/surface of the sawplate `an, or y, andi the* centerline of le gfytol `wtjthe vbevel of the saw"teethcan bewdetenmined.

The file g5', is then moved toward the Sawplate,by means of the screws z,.z,untillthe edge of the file' engages'with the edge of the saw plate. j Beforeycommencing theiopera- Thusit wiu be seenthe tion of filing theateeth5 the fles alsoto be l i adjusted around the axis of Shaft n,sby means of theiset screwandwingspso. as to cause the teeth to'be filed more or less pointed. Now when the driving shaft is set in motion thecrankl g, will actuate the' lever o, soV as to impart a vertical reciprocating motion tothe block fy, and to theiile;` g,I connected to ythe block, l so r as to cause the le to make incisions: into theedge of the saw plate. After the whole lengthof thestraight or the whole circumference `of the circular saw, .has been thus liled, the le maybe ad'- vanced a little by means of the screwsaa, i so as to cut the teeth deeper, and so forth; As often as the block yf, arrives toward. the end of its'upward motion, the friction rollers w', enter the curved yportions y", of` the grooves w', so as to cause the block:- yf; and file g, to move back from .the edge of the saw plate; Simultaneously with thisdisen of the spiral spring c. This motion of the stirrup causes the pawls y, lo', to move the ratchet wheel t, the distance of one or-more of its teeth, and operates also the device cZ, u, 15, s, fw, so as to cause the pawl to move the rail e, the distance of one or more of the ratchet teeth in the bottom of the rail, and thus move the saw plate a, a distance of one saw tooth. But if the circular plate y, is in the machine instead of the straight plate a, the motion of the ratchet wheel t, causes the shaft a, to turn with it so as to turn the saw plate 1 the distance of one saw tooth. During the time t-he saw plate is thus advanced, the block y, and the file commence their downward motion, and by the time the pin 7c, slips off the end n, of the stirrup, the friction rollers m, leave the grooves y", and the file engages again with the edge of the saw plate and cuts the next tooth.

Having described my improved machine for filing straight and circular saws, what-I claim therein as new and desire to secure by Letters Patent, is:

l. Determining the bevel of the teeth of a straight saw by means of pivoting the frame g, (which supports the rail e, and saw plate a,) at it, and hinging rods f', f', to said frame g, as seen at g', g', and confining these rods in their relative position by set screws it, it', constructed and arranged substantially as above described.

2. Determining the bevel of the teeth of a 4. Holding the file by clamps 1', r, set i screws o, 0, in combination with shaft n, set screw p, and bracket m, constructed and operating substantially in the manner and for the purpose set forth.

5. The combination of the movable table 0, with the mechanism for supporting and moving the saws, constructed and arranged thereon as shown and described, whereby the same machine can be quickly adapted for filing either straight or circular saws as set forth. Y

6. The combination of the mechanism for supporting and moving the saws, with the mechanism for supporting and operating the le-constructed, arranged and combined as above described and for` the purposes set forth.

A. HADLEY. Witnesses:

A. J. ROBINSON, J. C. FRENCH.