US689084A - Saw-setting machine. - Google Patents

Description

N0. 689,084. Patented DBO. I7, IQEII.

W. L. HLCUMB.

4SAW SETTING MACHINE'.

(Application led Aug'. 7`, 1901.)

. (No ModeL) 2 Sheets-Sheet I.

. @y m jwrys W. L. HLCMB.

SAW SETTING MACHINE.

(Application filed Aug. 7, 1901.)

2 Sheets-Sheet* (No Model.)

` w/rNEssEs.-

TTOHNE YS YH: Newmsysrsns co., Pham-nwo., wAsuxNmoN. D. c.

ner vertical edges of the legs 5t.'

yUNITED Sterns Artnr @muon WILLIAM LEVIS IIOLCOMB, OF GRAND HAVEN, MICHIGAN.

SAW-SETTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 689,084, dated. December 1'7, 1901.

Application filed August '7, 1901. Serial No. '71,177. (No model.)

To @ZZ whom it may concern:

Be it known that l, WILLIAM Lnwts HOL- COMB, a citizen of the United States,.and a resident of Grand Haven, in the county of Ot- 'tawa and State of Michigan., have invented a new and Improved Saw-Setting Machine, of which the following is a full, clear, and exact description.

inafter described, and defined in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the iigures.

Figure lis a side view of the improved sawsetting machine. Fig. 2 is a plan view ofthe same. Fig. 3 is an end elevation of the same, and Fig. e is a transverse sectional View substantially on the line 4: t in Fig. 2.

The main frame 5 of the machine comprises an elongated rectangular structure of suitable height, the legs 5a, that are positioned at each end of the flat top portion of said frame, being stiffened by the horizontal frame-beam 5b, affixed by its ends at the in- At the same side of the main frame 5 with the beam 5b a frame 6, of equal length and height thereto, is held to roclr toward and from the main frame by a pivotal engagement of the lower portions of the legs 6 on the frame 6 with the ends of the bracket-arms 6, that are outwardly extended from the legs 5a of the main frame 5. Upon the longitudinal top piece of the rockable frame G a pressure-bar 7 is removably clamped by the angle-clamps 8, said clamps, in spaced pairs, being oppositely secured `upon the upper and lower sides of the frame-piece 6b, so that depending members ofthe clamps may have hooked engagement with rabbetcd edges of the pressure-bar 7.

A similar pressure-bar 7L is removably heid by the clamps Si upon the side edge of the main frame top piece, so as to dispose said pressure-bar opposite to and suitably spaced from the other pressure-bar 7. Upon the adjacent sides of the pressure-bars '7 7a pins h b/ project in spaced rows, the distance between each pair of contiguous pins on each pressure-bar being equal to the distance between alternate teeth on the saw-blade that the machine is to bend or set As shown, the pins ZJ on the pressure-bar 7 intervene between the pins b on the bar 7, so that the latter-named series of pins may contact with the teeth of the saw to set them toward the rockable frame, while the pins b set the sawteeth they contact with toward the main frame,the saw-blade being supported between the frame, as follows: Two standards 9, of similar form and size, are erected upon the longitudinally-extended beam 5b and secured thereon at a suitable distance apart, as shown in Fig. l. A vertical slot cis formed in each standard 9, and a headed rest-pin d is slidably held in the slot of each standard, these pins aording support for the back edge of a saw-blade A when said blade is in position for the setting of its teeth, as indicated by dotted lines in Figs. l, 3, ande, the teeth intervening between the presser-pins b b, as before mentioned. A suitable number, preferably three, similar devices for forcibly rocking the upper portion of the frame 6 toward the frame 5 are provided, consisting of the following details of construction:

The horizontal top portion of the main frame 5 is apertured at three points, one aperture being at the longitudinalcenter of the frame and the others equally removed from said central opening. In each aperture of the main-frame top portion a cam-head 10 is held to rock by two central trunnions d', that are journaled in perforations in the frame top piece, as shown clearly in Fig. e. Upon each circular cam-head l0 an annular wedgeshaped projection e is formed, said projection serving as a cam to move a pull-bar 1l, as will presently be explained. A curved slot gis formed in the cam-head 10, concentric with its trunnions d', and said curved slot defines the outermost edge of the curved cam projection c. A lever is provided for each cam- IOO head 10 and is held connected therewith by the two laterally-projected lugs h, that extend from the lever near its lower end and are affixed upon the cam-head above and below the cam projection c. The pull-bar 11 for each cam-head 10 is flat in the body and at one end is bent to hook upon the outer top edge of the horizontal head-beam on the rockable frame 6, and the pull-bar is .thereto loosely secured by bolts i, that work in the slots i', formed in the pull-bars. The end of the pullbar 11 which projects toward the cam-head 10.passes loosely through the curved slot g therein and is bent so as to adapt it to hook over the rear side of the cam-head for contact of the wedge-shaped edge of the projection e therewith.

In order to give the cam-heads 10 rocking movement in the same direction, as indicated by the arrows m2 :r3 in Fig. 1, the lever 12 for thecentral cam-head is afforded greater length than that of the remaining levers 13 14, which are respectively projected from the cam-heads 10 in opposite directions. Upon the lever 12 a link-bar 15 is pivoted by one end, and yat the opposite end of the link- -bar `a similar connection between it and the free end of the lever 13 is produced, so that the lever 12 when rocked in the direction of the arrow 0: in Fig. 1 will correspondingly actuate the lever 13.

ment with the lever 12, and upon the lower nally'a sufficient degree to press the pins b and h' toward the teeth of a saw A for setting y the same.

Upon the main-frame top portion 5.and the like portion of the rockable frame 6 two ears m m are erected near each end, one ear, fm,

supporting a-set-screw n, that has engagement with a threaded perforation in the ear, so that the screw may be adjusted toward or from theopposed ear, m', and it will be seen that bya longitudinal adjustment of the setscrews n the degree of rocking movement of the pivoted frame 6 toward the stationary frame 5 may be exactly graduated.

In operation, assuming that the saw-.blade A'has been placed in position between the stationary frame 5 and rockable frame G, so that lthe presser-pins h and o are disposed exactly opposite alternate teeth of the saw, which are to be bent an equal degree away from the pressure-bars 7 7a by enforced contact of the ypins b b on said teeth, it will be obvious that a sufficient rocking movement ofthe lever 12in the direction of the arrows:

will'pull upon the bars 11, which will rock An arm 12n projects downwardly from the cam-head 10 in alinecados-1 the frame 6 and pins b toward the saw-teeth, that will be set a degree exactly defined by adjustment of the set-screws n, the'pins b simultaneously setting the intervening .sawteeth in an obvious manner.

It will be apparent that the improved machine may be employed for setting the teeth on any saw which will permit the blade thereof to be introduced between the stationary frame and rocking frame of the machine; also,'that any available number of the framerocking devices which have been described may be employed and by suitable connections be adapted for operation simultaneously or consecutively, as may be preferred. Further-more, it is obvious that a plurality of pressure-bars, such as 7, may he provided and any one of such bars be used, each bar having presser-pins b thereon, which may differ from those on another bar in thickness, length, and distance of separation, so that saws having teeth of different shapes and dimensions may be effectively operated upon-to set the teeth of each saw, it being understood that an appropriate pressure-bar 7a has been placed in position on the machine.

Having thus described my invention, I claim as newand desire to secure by Letters Patent-- 1. A saw-setting machine, comprising an elongated main frame, an auxiliary frame of the same length as the main frame and held to rock from the main frame, an exchangeable pressure-bar having a series of spaced presser-pins projected therefrom and securable on the side face of the auxiliary frame,- a like pressure-bar on the side face of the main frame, means to define the rocking movement of the auxiliary frame, and means for forcibly rocking the auxiliary frame Vtoward the main frame.

2. A saw-setting machine, comprising an elongated main frame having a level top piece true on its inner side edge, an auxiliary frame of the same length as the main kframe and held to rock from the main frame, an exn changeable pressure-bar on' the inner side face of the auxiliary frame, a similar pressure-bar on the inner side face of the main frame, a series of presser-pins-projected fromeach pressure-bar in alternating order, a de-v vice for defining the degree of approach of the pins toward an intervening saw-blade, and means for forcibly rocking the auxiliary-frame toward the main frame.

3. A saw setting machine, comprising a main frame, an auxiliary frame held to rock at one side of the main frame, a removable pressure-bar securable on the upper-side portion of the auxiliary frame, and rockable with the auxiliary frame toward and from the main frame, pins on the pressure-bar, a similar pressure-bar and pins on the upper side portionof the main frame, a device adapted to support a saw-blade withits teeth disposed opposite the two rows of pins, and a plurality IOC of cams operatively connected with each other, and means connecting each cam with the auxiliary frame.

4c. A saw setting machine, comprising a main frame, an auxiliary frame rockable to- Ward and from the main frame at one side thereof, and means for rocking the auxiliary frame, comprising a plurality of cam-heads held to rock on the level top of the main frame in openings in said top, each cam-head having a Wedge shaped segmental projection thereon and a curved slot therein, a lever on each cam-head, links pivotally connecting the levers together to adapt them to-rock together, and pullbars engaged with the auxiliary frame at one end of each bar, and at the opposite end passing through the curved slot of the cam-block fora loose engagement with the segmental Wedge-shaped projection thereon.

5. A saw-setting machine, comprising a main frame, an auxiliary frame pivoted to swing toward and from the main frame, each frame carrying a plurality of pins, the pins of one frame being alternately arranged with respect to the pins of the other frame, three cam-heads mounted in the main frame, each cam-head having a Wedge-shaped projection and a curved slot at the outermost edge of the projection, a lever attached to each camhead, one lever being longer than the others and extending beyond opposite sides of the cam-head, links connecting the levers,- and pull-rods having guided movement on the frames, each rod having one end engaging the pivoted frame and its other end passing through the slot of the cam-head and having its end bent into engagement with the Wedgeshaped projection.

6. A saw-setting machine, comprising a main frame provided with slots in its upper face and with projections, an auxiliary frame pivoted to swing toward and from the main frame and provided with projections opposite the projections of the main frame, screws in the projections of the auxiliary frame and adapted to engage the projections of the main frame, pressure -bars removably secured to the inner faces of the said frames and each provided with a series of pins, cam-heads mounted in the slots of the main frame and each provided with a Wedge-shaped projection and acurved slot, a lever secured to each cam-head, links pivotally connecting the levers together, and pull-bars having one end engaging the pivoted frame and their other ends passed through the slots of the camheads and bent into engagement Withthe Wedge-shaped projections, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM LEWIS HOLCOMB.

Witnesses:

P. BRUSSE, P. H. MGBRIDE.

Images